The type of nuclear reaction tht occurs when an alpha or a beta particle is spontaneously emitted by a radioactive isotope is Nuclear decay (radioactive decay).
When an atom's nucleus is unstable and emits energy spontaneously as radiation, this process is known as nuclear decay. The nucleus eventually transforms into the nucleus of one or more other components. These progeny nuclei are less energetically unstable and have a smaller mass than their parent nucleus.
They are released on their own because the radioactive nucleus wants to stabilize itself. This is accomplished through gamma, beta, or alpha emission. The periodic table's heavier elements exhibit alpha decay. This is due to the fact that they have an excessive number of protons, thus it lets go of a little portion of its nucleus to lessen electrostatic attraction and make it more stable. Quantum tunneling, a phenomena that affects how the alpha particle (i.e., helium nuclei) is emitted, is to blame.
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How many H atoms are in 1.00 moles of H atoms?
H atoms are in 1.00 moles of H2 atoms are 1.204 x 10²⁴ atoms.
Atomic mass of H = 1u
The given mass of hydrogen = 2g
Molar mass of hydrogen = 2 [H] = 2 [1] = 2g
Number of molecules = Given mass / molar mass = 2 / 2 = 1 mole
Total number of hydrogen atoms in H₂ = 2
Number of hydrogen atoms in 1 mole of H₂ = 1 × 2 × 6.02
= 12.04 × 10²³
= 1.204 × 10²⁴ atoms
Therefore the number of hydrogen atoms in 1 mole of H₂ = 1.204 × 10²⁴ atoms.
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What is the industrial process used to manufacture sulfuric acid?
The industrial process of the used in the manufacturing of the sulfuric acid is the contact process.
The contact process is the industrial process used to manufacture the sulfuric acid. The contact process is the current process used to produce the sulfuric acid. The steps used in the process of the contact process is given below :
1) The extraction of the sulphur
2) The preparation of the sulfur dioxide
3) The conversion of the sulfur dioxide to the sulfur trioxide
4) The conversion of the sulfur trioxide to the sulfuric acid.
Thus the process used in the industrial production of the sulfuric acid is contact process.
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he1 ions are observed in stellar atmospheres. use the bohr model to calculate the radius and the energy of he1 in the n 5 5 state. how much energy would be required to remove the electrons from 1 mol of he1 in this state? what frequency and wavelength of light would be emitted in a transition from the n 5 5 to the n 5 3 state of this ion? express all results in si units.
The Bohr model of the atom is a simple model developed by Niels Bohr in 1913 to explain the structure of the hydrogen atom. It proposed that electrons in atoms exist in certain discrete energy levels or "shells" and can jump between these levels by absorbing or emitting a photon of light.
The Bohr model can be used to calculate the radius and energy of the He1 ion in the n=5, l=5 state. The radius is given by the formula:
r = [tex]0.529 * 10^-^1^0 m * (n^2)[/tex]
where n is the principal quantum number. Plugging in n=5, we get:
r = [tex]0.529 * 10^-^1^0 m * (5^2) = 2.646 * 10^-^9 m[/tex]
The energy of the He1 ion in the n=5, l=5 state is given by the formula:
E = -2.18 * [tex]10^-^1^8[/tex] J * ([tex]\frac{1}{n^{2} }[/tex])
Plugging in n=5, we get:
E = -[tex]2.18 * 10^-^1^8 J * (1/5^2) = -1.31 * 10^-^1^7 J[/tex]
To remove an electron from 1 mol of He1 in this state, the energy required is:
E = n * E = 6.022 * [tex]10^2^3[/tex] * -1.31 * [tex]10^-^1^7[/tex] J = -7.8 * [tex]10^6[/tex] J
The frequency of the light emitted can be calculated using the formula:
nu = E / h
where h is Planck's constant and nu is the frequency of the light.
nu = 2.4 * [tex]10^-^1^8[/tex] J / 6.626 * [tex]10^-^3^4[/tex] J.s = 3.6 * [tex]10^1^5[/tex] Hz
The wavelength of the light emitted can be calculated using the formula:
lambda = c / nu
where c is the speed of light.
lambda = 3*[tex]10^8[/tex] m/s / 3.6 * [tex]10^1^5[/tex] Hz = 8.3 * [tex]10^-^8[/tex] m or 830 nm
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How many hydrogen atoms are in 1.00 mole of methane CH4?
The number of the hydrogen atoms in the 1 mole of the methane CH₄ is 24.088 × 10²³ atoms.
Given that :
The number of the moles = mass / molar mass
The number of the moles of the CH₄ , methane = 1 mol
The molecule of the CH₄ contains the 4 hydrogen atoms. The number of the molecules in the 1 mole of the atom is 6.022 × 10²³ molecules.
The number of the hydrogen atoms in the CH₄ , methane = 4 hydrogen atoms.
Therefore, the number of the hydrogen atom = 4 × 6.022 × 10²³
The number of the hydrogen atoms in 1 mole of the CH₄ = 24.088 × 10²³ atoms.
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How many oxygen atoms are there in 1 mole of CO2?
CO2 is formed by the combination of the compounds C and O in the ratio 1:2. so. there are two oxygen atoms and one carbon atoms in one mole of CO2.
Compounds are the pure substances. According to the Law of Constant Proportions, the elements present in a compound are combined in a fixed ratio. As a compound of carbon dioxide (CO2) is formed by the combination of C and O in the ratio of 1:2. So, 1 molecule of carbon dioxide has 2 atoms of oxygen. So, 2 moles of oxygen atoms are there in one mole of CO2. Carbon dioxide is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. carbon dioxide is transparent to visible light but absorbs infrared radiation acts as a greenhouse gas.
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which type of formula has the actual number of atoms in the molecule?
Molecular formula has the actual number of atoms in the molecule
A Molecular formula is a way to describe the chemical ratios of the atoms that make up a specific chemical compound or molecule in chemistry. Chemical element symbols, numbers, and occasionally other symbols, such as parentheses, dashes, brackets, commas, and plus (+) and minus () signs, are used to represent the chemical elements. These can only include one typographic line of symbols, which may also include subscripts and superscripts. A chemical formula has no words and is not the same as the chemical name. A chemical formula does not equal a complete chemical structural formula, despite the fact that it may suggest some basic chemical structures. Chemical formulae are often less powerful than chemical names and structural formulae, and they can only fully describe the structure of the simplest molecules and chemical compounds.
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except when actively removing content from it, a chemical container must
Except when actively removing content from it, a chemical container must be properly labeled and sealed to prevent leaks or spills.
Chemical containers must be properly labeled with the chemical name, hazard warnings, and any other necessary information, such as the manufacturer's name and the date of manufacture. They should also be properly sealed to prevent leaks or spills and to keep the contents from evaporating. It is also important to store chemical containers in a safe and appropriate location, away from heat sources, potential sources of ignition and out of the reach of children and unauthorized personnel. It is important to follow the guidelines and regulations set by the appropriate authorities such as OSHA, to ensure the safe handling and storage of chemicals.
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3. What volume of nitrogen gas (N₂) is equal to 5.42x1022 molecules of this substance?
The volume of nitrogen gas equal to 5.42x1022 molecules of this substance is, 19.28 liters.
How to calculate molecules of the substance?
First we have to calculate the moles of nitrogen gas.
As 6.022x1023 molecules present in 1 mole of nitrogen gas
So 5.42x1022 molecules present in 5.42*1022/6.022*1023=0.8609mole of nitrogen gas.
Now we have to calculate the volume of nitrogen gas
As we know that, 1 mole of substance occupies 22.4 L volume of gas at STP.
As, 1 mole of nitrogen gas occupies 22.4 L volume of nitrogen gas
So, 0.8609 mole of nitrogen gas occupies 0.8609*22.4=19.28L volume of nitrogen gas
Therefore, the volume of 5.42x1022 nitrogen gas equal to molecules of this substance is, 19.28 liters.
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Titration Curve for Alanine Definition
To determine the concentration of an unknown solution, the technique that can be used is titration, where the solution of a known concentration is used. The titrant is added to the burette with a known volume of unknown solution till the reaction is finished.
The titration curve for the alanine definition is the the technique use to determine the concentration of the unknown solution is called as the titration.
Titration is used in the laboratory method. The titration is used to determine the concentration of the unknown solution and it is the qualitative analysis. The titration technique is very useful in the analytical chemistry. The solution of the known concentration is called as the titrant. The titrant is added into the burette till the reaction is completed.
The titration are of four types :
Acid - base titrationRedox titrationsPrecipitation titrationComplexometric titrationThe solution of the unknown concentration is called as the analyte.
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Fillin the words to complete each step in liquid spill cleanup Surround the area with Choose then cover the spill Scoop up the material and place in a plastic baq 3. Place the bagged waste in a Choose: Wipe down the area withl Chooso detergent and walor bloachi broom and dusipan
Spill-cleaning materials should never be reused because of the risk of contamination. This indicates that items like absorbents and cleaning supplies need to be stored and packaged for disposal of hazardous waste.
Different cleaning techniques are used depending on the type of soil that was spilled. These are the necessary steps in liquid spill cleanup Surround the area:
1. Once the area has been covered with the absorbent material, cover the whole spill.
2. Put all the material in a plastic bag that has been scooped up and collected.
3. Put every bagged piece of trash into a sturdy trash can and organize it there.
4. It is beneficial to use of soap, water, and cleaning agent to disinfect the region.
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In a closed vessel containing water, the pressure is 18 torr. if we add more water to the vessel, this equilibrium pressure would?
In a closed vessel containing water, the pressure is 18 torr. if we add more water to the vessel, this equilibrium pressure would remain the same.
The pressure in a closed vessel holding water is 18 torr; if more water were to be added, the equilibrium pressure would not change.
The pressure that a vapor exerts while it is in equilibrium with its liquid phase is known as vapor pressure. The vapor pressure is unaffected by the presence of ANY liquid (the actual amount of liquid is irrelevant). The temperature is the single factor that influences a substance's vapor pressure.
The force generated by a substance's vapor molecules in a sealed environment is known as vapor pressure. It happens at equilibrium, or at a given pressure when molecules are vaporizing and condensing at the same rate. The kinetic energy of a molecule is closely correlated with the vapor pressure. Increased vapor pressures and higher volatility, or the propensity to evaporate, are characteristics of light molecules, as well as those with high kinetic energy or weak intermolecular interactions.
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how would the products differ if styrene were reacted with m-cpba in methylene chloride versus water?
If styrene were reacted with m-chloroperoxybenzoic acid (m-CPBA) in methylene chloride, the reaction would likely proceed as an electrophilic addition, forming a styrene oxide intermediate. This intermediate can then undergo further reactions, such as acid-catalyzed ring-opening, to form various products.
If the reaction were done in water, the reaction conditions would be different, as water is a polar solvent and could potentially participate in the reaction. Additionally, the reaction would be likely to proceed via a different mechanism, such as a nucleophilic addition, resulting in different products.
It is also important to note that m-CPBA is a strong oxidizing agent, and the reaction with styrene in water might face solubility and stability issues.
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An evacuated cylinder has a volume of 50 liters. If 20 liters of nitrogen gas and 20 liters of oxygen gas are pumped into this evacuated cylinder, how much of the cylinder is filled with the two gases?
An evacuated cylinder has a volume of 50 litres. If 20 litres of nitrogen gas and 20 litres of oxygen gas are pumped into this evacuated, cylinder is filled with the two gases with 50 litres.
From the kinetic theory of gases which says that a gas is in constant random motion, the gas does not have a specific volume but takes on the volume of the container as it will expand and fill the container.
Thus, the volume occupied by the two gases that is, nitrogen and oxygen, will be the same as the volume of the container.
Therefore, the nitrogen gas and the oxygen gas, will both occupy 50 litres together in the container.
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On bill’s earth model, what section of the planet’s has the hottest temperature
The section of the planet with the hottest temperature is Death valley, according to Bill's earth model.
Why are parts of the earth hotter than other parts?Since the Earth is tilted on its axis, some places receive direct vertical sun rays and are hotter, such as the equator, while others receive slanted sun rays and are cooler. Differences in sunlight exposure, cloud cover, atmospheric circulation patterns, aerosol concentrations, and other factors vary from place to place, influencing whether and how much a location warms or cools.
Death Valley holds the world record for the highest air temperature, temperatures in the appropriately named Furnace Creek area of the California desert reached a scorching 56.7°C (134.1°F). Meanwhile, average summer temperatures frequently exceed 45°C (113°F).
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Use the electron-transfer method to balance the equation involving the reaction of lithium with water to produce lithium hydroxide and hydrogen gas.
Answer:
Explanation:
The equation for the reaction of lithium with water to produce lithium hydroxide and hydrogen gas is:
Li + H2O -> LiOH + H2
To balance this equation using the electron-transfer method, we first need to determine the oxidation states of each element in the reactants and products.
In Li, the oxidation state of lithium is +1. In H2O, the oxidation state of hydrogen is +1 and oxygen is -2.
In LiOH, the oxidation state of lithium is +1, oxygen is -2 and hydrogen is +1.
In H2, the oxidation state of hydrogen is +1.
It's clear that lithium loses 1 electron to become Li+ and hydrogen gains 1 electron to become H-.
So, we have to add an electron on the right side of the equation to balance the electrons.
Li + H2O -> LiOH + H2 + e-
Now, the number of electrons on both sides of the equation is the same and the equation is balanced.
Alternatively, we can use the oxidation number method, where we balance the charge of the reactant and product side of the equation. The sum of the oxidation numbers of all atoms on the reactant side must equal the sum of the oxidation numbers of all atoms on the products side. In this case, the oxidation state of lithium is +1, hydrogen is +1 and oxygen is -2.
Li + H2O -> LiOH + H2
+1 +1 -2 = +1 +1 +1 -2
The equation is already balanced with respect to oxidation numbers
For the reaction 2Na + Cl2 ® 2NaCl, how many grams of sodium chloride can be produced from 142. g of chlorine?
Grams of sodium chloride can be produced from 142. g of chlorine is 142 g.
What do you mean by sodium chloride?Sodium chloride is a chemical compound composed of the elements sodium and chlorine. It is commonly known as table salt and is used as a seasoning in food, as well as in many industrial, medical and chemical processes.
Sodium chloride has the chemical formula NaCl and is made up of one sodium atom and one chlorine atom. In nature, it is found in the form of rock salt or halite and is abundant in many parts of the world.
Sodium chloride has many uses in cooking and food preservation. It is used as a seasoning and flavor enhancer, as well as to preserve food by inhibiting the growth of microorganisms. In industry, it is used as a raw material for the production of many products such as soaps, detergents, and chlorine. It is also used in the production of other chemicals, such as caustic soda, chlorine gas, and hydrochloric acid.
To find out how many grams of sodium chloride can be produced from 142. g of chlorine, we need to use the balanced chemical equation for the reaction.
In the equation 2Na + Cl2 → 2NaCl, we can see that the ratio of chlorine to sodium chloride is 1:1. Therefore, for every 1 gram of chlorine, 1 gram of sodium chloride is produced.
So, 142 g of chlorine will produce 142 g of sodium chloride.
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atoms that have the same number of protons but different numbers of neutrons
Isotopes have different numbers of neutrons despite having the same number of protons.
Simple definition of what isotopes are.Isotopes are atoms that have a fixed number of protons but fluctuating neutron counts. They differ physically because of their different masses, but almost chemically they are identical.
Isotopes are members of the same family of elements as that element, but they all have different numbers of neutrons compared to protons. On the Periodic Table, an element's atomic number is based on how many protons are in its nucleus. Despite having different atomic masses and physical characteristics, all elements in the periodic table exhibit nearly the same chemical behavior.
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What happens when oxygen reacts with sodium?
When oxygen reacts with sodium, a chemical reaction occurs in which the oxygen combines with the sodium to form sodium oxide (Na2O).
This reaction is highly exothermic and can be quite violent, releasing a great deal of heat and light. The reaction is typically accompanied by the formation of sparks and flames.Na2O is the chemical formula for sodium oxide, a compound composed of two sodium atoms and one oxygen atom. It is a white solid that is highly reactive with water and can be formed by heating sodium hydroxide or by the fusion of sodium and oxygen. It is also a basic oxide, meaning it reacts with acids to form salts and water. The reaction can be represented by the chemical equation: 2Na + O2 → 2NaO.
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Does C2H6 react with O2?
Yes, during combustion, C2H6 (ethane) combines with O2 (oxygen) to produce CO2 (carbon dioxide) and H2O (water). C2H6 + 3O2 2CO2 + 3H2O is the balanced chemical equation for this reaction.
Ethane is a hydrocarbon molecule with the chemical formula C2H6. It is a colorless, odorless, and flammable gas at room temperature and pressure. Ethane is the second simplest alkane, after methane, and is the primary component of natural gas. It is also used as a feedstock in the petrochemical industry to produce a wide range of chemicals such as ethylene, which is used in the production of plastics, and ethanol.
This reaction results in the release of a significant quantity of energy in the form of heat and light. Exothermic is the response.
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please lok at imagie
Which of the following would result in a plant producing More food for itself
The event that would result in a plant being able to produce more food for itself is C. The presence of more light.
What affects photosynthesis ?Even with lots of water, carbon dioxide, and the right temperature, a plant cannot photosynthesize very quickly in the absence of sufficient light. The rate of photosynthesis rises as light intensity rises.
In photosynthesis, carbon dioxide and water are one of the reactants. The rate of photosynthesis will therefore increase as carbon dioxide concentration rises.
Enzymes regulate the chemical events that mix water and carbon dioxide to create glucose. Temperature has an impact on the rate of photosynthesis just like it does with any other enzyme-controlled reaction.
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Options for this question include:
Lower light intensity Lack of carbon dioxide The presence of more lighttrue or false in molecular assays the sample preparation method is heavily influenced by the clinical question and the sample type
True, in molecular assays, the sample preparation method is heavily influenced by the clinical question and the sample type.
Molecular tests involve the amplification of small portions of viral RNA so that a viral infection can be identified through the use of a specific test. These examinations are also known as nucleic acid amplification tests in some circles (NAAT). First, a sample is obtained from a potentially infected person's mouth or nose (saliva), where the virus may be present. This is the first step in the method.
So it is true, in molecular assays, the sample preparation method is heavily influenced by the clinical question and the sample type.
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Are neutral compounds conductive?
No current flows because the solution's neutral molecules are unable to carry electrical charges.
Can substances that are neutral conduct electricity? No current flows because the solution's neutral molecules are unable to carry electrical charges.A nonelectrolyte is a material that transmits water's aqueous solution no better than water does on its own.So, whereas pure neutral molecule solutions don't conduct electricity, ion-containing solutions do.Because their ions are free to travel from one location to another, ionic substances conduct electricity when they are liquid or dissolved in water.Because their ions are immobile and maintained in fixed places, ionic substances cannot conduct electricity when solid.Due to the free movement of the ions, ionic compound solutions and molten forms can conduct electricity.When an ionic chemical dissolves in solution, the ions in the molecule dissociate.To learn more about neutral conduct refer
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Does oxygen and chlorine form an ionic compound?
No oxygen and chlorine does not form ionic compound due to both are non-metals and hence both of them forms Covalent compounds.
What is Chlorine (Cl)?The element chlorine (Cl) of the periodic table has the atomic number 17 and the universal symbol Cl. Between bromine and fluorine in the periodic table, fluorine is the second-lightest halogen and has the majority of its properties in the middle. Chlorine is a yellow-green gas at normal temperature.
Chlorine has the following general specifications:
Symbol: ClAtomic number: 17Atomic mass: 35.453 uElectron configuration: [Ne] 3s²3p⁵Boiling point: -34.04 °CDiscoverer: Carl Wilhelm ScheeleChemical series: Halogen, Nonmetal, Period 3 elementTo know more about Chlorine visit
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Complete the nuclear equations name the radiation
27Co^60 -> 0 e ^-1
To solve this we must be knowing each and every concept related to radioactive decay. Therefore, the balanced equation for the given chemical reaction can be given as
⁶⁰Co₂₇ [tex]\rightarrow[/tex] ⁶°Ni₂₈ + ₀e⁻¹
What is radioactive decay?The spontaneous disintegration about a nucleus of an atom of such a radioactive substance that results inside the radiation emission first from nucleus is referred to as radioactive decay.
A parent nuclide is the nuclide which decays inside a radioactive process, while a daughter nuclide is the nuclide that is formed in the radioactive process.
The balanced equation for the given chemical reaction can be given as
⁶⁰Co₂₇ [tex]\rightarrow[/tex] ⁶°Ni₂₈ + ₀e⁻¹
Therefore, the balanced equation for the given chemical reaction can be given as
⁶⁰Co₂₇ [tex]\rightarrow[/tex] ⁶°Ni₂₈ + ₀e⁻¹
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give 1 ph value where benzoic acid and dibromobenzene would be in different layers in an extraction. assume that possible ph values are between 0 and 14.
One pH value where benzoic acid and dibromobenzene would be in different layers in an extraction is around 2.5. At this pH, benzoic acid will be in its acidic form and will be in the aqueous layer, while dibromobenzene will be in its neutral form and will be in the organic layer.
In a liquid-liquid extraction, the goal is to separate two or more compounds based on their relative solubility in different solvents. Benzoic acid and dibromobenzene are two such compounds that can be separated in this way.
Benzoic acid is an organic acid with a carboxylic acid functional group, while dibromobenzene is an organic compound with an aromatic ring. The solubility of these compounds in different solvents will depend on their chemical properties, and can also be influenced by pH.
At a pH of around 2.5, benzoic acid will be in its acidic form and will be more soluble in water, making it more likely to be present in the aqueous layer. Dibromobenzene, on the other hand, will be in its neutral form and will be more likely to be present in the organic layer.
By adjusting the pH of the aqueous layer to the appropriate value, the two compounds can be effectively separated. It is important to note that this is just one example of a pH value that can be used for this separation, and that other factors such as the choice of solvents and the relative concentrations of the compounds will also play a role.
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Drag each option to the correct location on the image. Match each effect to the phenomenon that caused it. Snails and mussels get endangered. Dry climates become drier. Crustaceans become rare. Sea levels increase. The number of birds laying defective eggs increases.
The correct match of the correct location on the image is:
Snails and mussels get endangered: acid rain.Dry climates become drier: global warming.Crustaceans become rare: acid rain.Sea levels increase: global warming.The number of birds laying defective eggs increases: acid rain.What is acid rain?Rain or any other form of precipitation that is unusually acidic, that is, with high quantities of hydrogen ions, is referred to as acid rain.
The acid from acid rain produces corroding effects on snails. Due to global warming, the ice caps melt, thus increasing the sea levels.
Therefore, the correct option is
acid rain.global warming.acid rain.global warming. acid rain.To learn more about acid rain, refer to the link:
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The question is incomplete. Your most probably complete question is given below:
answer choices are
acid rain,
and global warming
How many carbon atoms are present in the compounds CaCO3?
There is only one carbon atom present in the compound CaCO3 other are of Calcium and Oxygen.
What is Calcium?The chemical element calcium has the atomic number 20 and the letter Ca is used as the symbol of Calcium. Calcium is an alkaline earth metal which reacts with air to create a black oxide-nitride coating. The heavier homologues barium and strontium are most similar to it in terms of physical and chemical characteristics.
Calcium has the following Specifications:
Symbol of Calcium: CaAtomic number: 20Atomic mass: 40.078 uElectron configuration: [Ar] 4s²Electronegativity: 1Discoverer: Humphry DavyTo know more about Calcium do visit
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Is there an attraction between two neutral helium atoms?
Van der Waals force is an attraction between two neutral helium atoms.
In order to provide each atom a stable arrangement of electrons, most elements' atoms, including those of hydrogen, oxygen, and carbon, develop strong chemical bonds by sharing electrons with their neighbors. The electrons in a helium atom already have a stable state, thus they are unable to perform this. Instead, the van der Waals force—a considerably weaker attraction brought on by transient electric charge imbalances between the two helium atoms—binds helium atom pairs.
The two helium atoms will ultimately be attracted to one another. Pairs of atoms in the other noble gases can also be subject to the same reasoning that was just made. In fact, it explains why there must be forces of attraction between any two molecules, even if they are very weak.
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The _________ between positive and negative charges holds the atom together.
The electrostatic force between positive and negative charges holds the atom together.
Electrostatic attraction and repulsion are both aspects of the electrostatic force, which is created by the electric charge of individual particles. In some circles, it is also referred to as Columb's force. Charles-Augustin de Coulomb, a prominent French scientist, would be honored with the naming of the Columb attraction.
However, the electrostatic force is considered to be one of the four fundamental forces that exist in nature. When two charges with opposite signs, one positive and one negative, are brought into contact with one another, the resulting force is repulsion. The electrostatic force between positive and negative charges holds the atom together.
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