Answer:
hope it helps <3
Explanation:
Chemical reaction combines the element oxygen with other elements or molecules
of the following types of bonds or interactions between atoms in aqueous solutions, which is the weakest?
Van der Waals forces are the weakest bonds or interaction among all the aqueous solution.
Van der Waals forces, which depend on the separation between atoms or molecules, are weak intermolecular forces. These interactions between uncharged atoms and molecules give rise to these forces.
Three types of van der Waals forces may be distinguished: electrostatic, inductive, and dispersion. In each class, the dipole-dipole, dipole-induced dipole, and London dispersion contributions are often the only interactions that are included in textbooks since they are always substantial when they occur. Various elements have different melting and boiling temperatures due to van der Waals force. The more energy (heat) required to dissolve an atom's bonds, the stronger the force holding them together.
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The mass of an object is 100 kg and has a volume
of 20 cm3 what is the object's density?
The object's density is 5 gcm^-3
What is Density?The mass of a substance per unit of volume is its density. Density is most frequently represented by the symbol, however Latin letter D may also be used.
Mass divided by volume is the formula for density in mathematics: displaystyle rho = frac mV. where m is the mass, V is the volume, and is the density.
Therefore, Density is Mass/Volume
100g/20
= 5 gcm^-3
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_____ is the process of converting the language of nucleic acids (nucleotides) to the language of proteins (amino acids).
Translation is the process of converting the language of the nucleic acids that is nucleotides to the language of proteins that is amino acids.
The process of the conversion of the nucleic acids that is nucleotides to the language of proteins that is amino acids is called as the translation. In the translation process , the strands of the protein is produced from mRNA molecule. The mRNA is the nucleic acid molecule which formed by the help of the multiple nucleotides that is present together.
The formation of the protein strands is the process of the protein synthesis. It is based on the sequence of mRNA molecule.
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What is the total mass of CH4?
The total mass of CH4 is 16.04 g/mol. This means that for every one mole of CH4, there is a total mass of 16.04 grams.
CH4 is a molecule composed of one carbon atom and four hydrogen atoms. This makes up the total mass of 16.04 g/mol. CH4 is the major component of natural gas, and is an important fuel source.
It is also a major contributor to the greenhouse effect, as it is a potent greenhouse gas. CH4 has been found to be the second most abundant greenhouse gas in the atmosphere, after carbon dioxide. It has a global warming potential of 28-36 times that of carbon dioxide. As such, it is important to reduce CH4 emissions to help mitigate the effects of climate change.
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What volume of Argon gas (at STP) is equal to 2 grams of Argon?
10/2
At STP, a volume of 1.12 liters is equivalent to 2 grams of argon gas.
What is STP?The standard temperature and pressure is called STP. The conditions are 0 °C (273.15 Kelvin) and 1 atmosphere (101.325 kilopascals), respectively. STP is often used as a benchmark for gas characteristics calculation and heterogeneity.
For above given example,
The molar mass of argon is 39.95 g/mol. Using the ideal gas law equation PV = nRT and at STP conditions (standard temperature and pressure, which are 0 °C or 273.15 K and 1 atm or 101.325 kPa, respectively), we can determine how many moles of argon are in 2 grams.
n = m/M = 2 g / 39.95 g/mol = 0.050 mol
Therefore the volume of argon can be determined using the molar volume of an ideal gas at STP, which is approximately 22.4 L/mol:
V = n x 22.4 L/mol = 0.050 mol x 22.4 L/mol = 1.12 L
Therefore, 2 grams of argon gas at STP is equal to a volume of approximately 1.12 liters.
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A sample of neon occupies 3.25 L at 35ºC and 1829 mm Hg. What will the temperature of the gas be, in degrees Celsius, at a volume of 4250 mL and a pressure of 1.25 atm?
The temperature (in degrees Celsius) of the gas at a volume of 4250 mL and a pressure of 1.25 atm is -63.8 °C
How do I determine the temperature?The temperature of the gas at a volume of 4250 mL and a pressure of 1.25 atm can be obtained by using the combined gas equation as illustrated below:
Initial volume (V₁) = 3.25 LInitial pressure (P₁) = 1829 mmHgInitial temperature (T₁) = 35 °C = 35 + 273 = 308 KNew volume (V₂) = 4250 mL = 4250 / 1000 = 4.25 LNew pressure (P₂) = 1.25 atm = 1.25 × 760 = 950 mmHgNew temperature (T₂) =?P₁V₁ / T₁ = P₂V₂ / T₂
(1829 × 3.25) / 308 = (950 × 4.25) / T₂
Cross multiply
1829 × 3.25 × T₂ = 308 × 950 × 4.25
Divide both side by (1829 × 3.25)
T₂ = (308 × 950 × 4.25) / (1829 × 3.25)
T₂ = 209.2 K
Subtract 273 to obtain answer in °C
T₂ = 209.2 - 273 K
T₂ = -63.8 °C
Thus, we can conclude that the temperature is -63.8 °C
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At which boundary may a mountain chain of sedimentary rock form?
convergent boundary of two continental crusts
convergent boundary of two continental crusts
convergent boundary of oceanic crust and continental crust
convergent boundary of oceanic crust and continental crust
divergent boundary between two oceanic crusts
divergent boundary between two oceanic crusts
divergent boundary of oceanic crust and continental crust
The boundary at which a mountain chain of sedimentary rock may form is the convergent boundary of two continental crusts.
The correct option is A.
What is a convergent boundary?A location on Earth where two or more lithospheric plates clash is known as a convergent boundary.
Subduction is the inevitable sliding of one plate beneath the other. The Wadati-Benioff zone, a plane with a high frequency of earthquakes, can be used to designate the subduction zone.
Sedimentary rocks may be formed at the convergent boundary of two tectonic plates.
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Answer:The answer to the question above is the second choice, "convergent boundary of two continental crusts". This type of convergence creates some of the world's largest mountain ranges. Magma cannot penetrate the thick crust. Therefore, there are no volcanoes.
Explanation:
kinda late though haha
Classify each organic compound based on the functional group it contains
Organic compound which has -OH as functional group is classified as alcohols while those with -COOH as functional group are classified as carboxylic acids.
What is functional group?Functional group is defined as a substituent or group of atoms or an atom which causes chemical reactions.Each functional group will react similarly regardless to the parent carbon chain to which it is attached.This helps in prediction of chemical reactions.
The reactivity of functional group can be enhanced by making modifications in the functional group .Atoms present in functional groups are linked to each other by means of covalent bonds.They are named along with organic compounds according to IUPAC nomenclature.
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40 cm3 of acid were mixed with 60 cm3 of alkali in an insulated container. The average temperature of the two solutions before they were mixed was 19.5°C. The temperature after mixing was 27.5°C. Was this an exothermic or an endothermic reaction?
This was an exothermic reaction, as the temperature increased from 19.5°C to 27.5°C after mixing.
Exothermic reactionAn exothermic reaction is a chemical reaction that releases energy in the form of heat. This energy is released because the reactants have a higher energy content than the products.
As the reaction proceeds, the energy difference between the reactants and products is released as heat.
Examples of exothermic reactions include combustion, burning, oxidation, and some types of chemical reactions.
These reactions can be spontaneous, meaning they occur without any outside energy input.
Exothermic reactions are important in many fields, such as energy production and manufacturing, since they can provide a useful source of energy.
This indicates that energy was released as the two solutions mixed, resulting in an increase in temperature.
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How many moles are in 5.02 X 1023 atoms of chlorine gas
It takes 5.02 1023 units of a chemical to make up one mole (such as atoms, molecules, or ions).
Chlorine gas has how many moles?The periodic table's atomic weight in g/mol for chlorine, which is 35.45 g/mol, can be used to calculate the mass of one mole of chlorine gas. This value is known as the molar mass.It takes 6.022 1023 units of a chemical to make up one mole (such as atoms, molecules, or ions). Avogadro's number or Avogadro's constant are both designations for the number 6.022 1023.By canceling these atoms, we can calculate the amount of gold that is equivalent to 0.87 moles. Hope you can understand the solution; this is the answer.To learn more about mole refer to:
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How are changes in oxidation number related to the transfer of electrons?
Changes in oxidation number are related to the transfer of electrons in that oxidation is defined as the loss of electrons, while reduction is defined as the gain of electrons.
During a redox reaction, electrons are transferred from one molecule or ion to another, and the oxidation numbers of the molecules or ions involved in the reaction change to reflect the transfer of electrons.
Oxidation numbers can be used to identify which molecule or ion is being oxidized and which is being reduced in a redox reaction.
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what was the original mass of a radioactive sample that decayed to 25 grams in four half life periods
The original mass of the radioactive sample was 1.5625 grams. A half-life period is the amount of time it takes for half of a radioactive sample to decay
In order to determine the original mass of a radioactive sample that has decayed to 25 grams in four half-lives, we need to use the formula:
Original mass = final mass multiplied by (half-life period / number of half-lives)2.
Since we know that the final mass is 25 grams, the number of half-life periods is 4, and we can assume that the half-life period is constant.
So, original mass = 25 × (1/4)² = 25 × 1/16 = 25/16 = 1.5625 grams.
Therefore, the original mass of the radioactive sample was 1.5625 grams.
The number of half-life periods that have passed is a measure of how much the sample has decayed. Each time a half-life period passes, the remaining radioactive sample is cut in half.
In this case, we know that the original sample has gone through four half-lives and has decayed to 25 grams. This means that at the end of the first half-life period, the sample would have been halved to half its original mass. At the end of the second half-life period, it would have been halved again, and so on. After four half-lives, the remaining sample would be only 25 grams, or 1/16th of the original mass.
Original mass = final mass * (half-life period / number of half-life periods) 2 can be used to calculate the sample's original mass by taking the final mass and multiplying it by the reciprocal of the number of half-life periods squared. This is because each half-life period reduces the mass of the sample by a factor of 1/2, and by the fourth half-life period, the remaining sample will have been reduced by a factor of 1/2 × 1/2 × 1/2 × 1/2 = 1/16.
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if the reduction of camphor was incomplete and a small amount of (1r)-( )-camphor was contaminating the isoborneol-borneol mixture, what effect would this have: a) on the optical rotation of the sample? b) on the % distribution calculated for the isoborneol-borneol mixture?
a) The optical rotation of the sample would likely be affected by the presence of the (1r)-( )-camphor, as it would change the overall chirality of the mixture. The exact effect would depend on the specific concentrations of the various stereoisomers present.
b) The % distribution calculated for the isoborneol-borneol mixture would also be affected by the presence of the (1r)-( )-camphor. As the mixture is contaminated by a small amount of (1r)-( )-camphor it would change the ratio of isoborneol to borneol, which would lead to an incorrect calculation of the % distribution.
The presence of camphor, particularly if it is not completely reduced, can have a significant impact on the properties and characterization of the isoborneol-borneol mixture. As mentioned earlier, it can affect the optical rotation and the percentage distribution of the mixture, leading to inaccurate results. Additionally, camphor can also affect the purity and yield of the final product, and may interfere with downstream applications or processes that use the isoborneol-borneol mixture.
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How many moles of potassium oxide (k20) will be formed when 1.52 moles of potassium reacts with oxygen according to the following reaction: 4k + o2 yield 2 k20
According to the stoichiometry of the given chemical reaction, 1.835 moles of potassium oxide will be formed when 1.52 moles of potassium reacts with oxygen .
What is stoichiometry?Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.
In the given reaction 156 moles of potassium gives 188.4 moles of potassium oxide, thus, 1.52 moles will give 1.52×188.4/156=1.835 moles.
Thus, 1.835 moles of potassium oxide will be formed when 1.52 moles of potassium reacts with oxygen .
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Make sure the rearrangement has the target variable______
Yes, the target variable is a requirement for the rearrangement to be valid. The target variable, which we are attempting to predict or analyze, must be taken into account for the rearrangement to be effective.
Rearrangement is what?
Rearranging or reorganizing a group or structure's collection of elements is known as rearrangement. To make a new arrangement, it may be necessary to move some elements around, rearrange them, or change the emphasis of an element. Rearranging things can give something a fresh appearance or make a system more effective. Rearranging the furniture in a room, for instance, can give it a fresh feel.To learn more about rearrangement here
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How many moles of solute are in 250ml of 2.0m cacl2?
Answer:
0.2 moles
Explanation:
To find the number of moles of solute in a solution, you can use the formula: moles of solute = concentration (in molarity) x liters of solution. In this case, the concentration of the calcium chloride (CaCl2) solution is 2.0 M, and the volume of the solution is 250 ml. To convert the volume from milliliters to liters, you need to divide by 1000, so the solution's volume is 0.25 L.
Now we can substitute the values into the formula:
moles of solute = 2.0 M x 0.25 L = 0.5 moles.
but we need to remember that calcium chloride is a salt composed of two ions (Ca2+, Cl-), so the number of moles of CaCl2 is half the number of moles of calcium ions and chloride ions. Therefore, the number of moles of solute in 250ml of 2.0m CaCl2 is 0.5/2 = 0.2 moles.
a classification for matter that always has the same composition
Answer:
Explanation:
Matter that always has exactly the same composition is classified as a pure substance. Every sample of a given substance has the same properties because a substance has a fixed, uniform composition.
HELPP!! INOIC BONDS
How will Sr and O come together in an ionic bond? Complete the sentence: For
every 1 atom of Sr, there will be
atom(s) of 0.
Choose
The ionic substance strontium oxide, SrO, forms from the reaction of strontium metal with molecular oxygen.
What is ionic compounds?Positively charged ions, known as cations, and negatively charged ions, known as anions, make up ionic compounds, which are neutral substances. The name of the cation is written first, followed by the name of the anion, for binary ionic compounds (ionic compounds that only contain two types of elements).A chemical compound known as an ionic compound in chemistry is one that contains ions bound together by the electrostatic forces known as ionic bonding. Despite having both positively and negatively charged ions, or cations and anions, the molecule is generally neutral.Ionic bonding will often be present in compounds when a metal is bound to either a non-metal or a semi-metal.Learn more about Ionic compound refer to ;
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Water is able to dissolve many compounds as a result of which of the following?
Please choose the correct answer from the following choices, and then select the submit answer button.
O the fact that water molecules are polar and that the hydrogen atoms in water molecules have a slight negative charge
O the fact that water molecules are non-polar
O the fact that the hydrogen atoms in water molecules have a slight negative charge
O the fact that most non-water molecules are hydrophobic
O the fact that water molecules are polar
Water is able to dissolve many compounds as a result of the fact that water molecules are polar and that the hydrogen atoms in water molecules have a slight negative charge.
When a liquid spreads over the surface flippantly with out the formation of droplets, a floor is wetted. If that liquid is water, the surface is hydrophilic. Water molecules have a polar association of oxygen and hydrogen atoms—one side (hydrogen) has a wonderful electric charge and the alternative side (oxygen) had a terrible rate. This lets in the water molecule to turn out to be drawn to many different unique varieties of molecules. Generally speaking, water is right at dissolving ions and polar molecules, however terrible at dissolving nonpolar molecules.
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NaCl molar mass? show solution pls
58.44 g/mol. One mole of sodium chloride weighs 58.44 g. (6.02 x 1023 formulas). To put it another way, it provides the grams of a substance per mole.
A molar mass A chemical compound's mass M is equal to the molecular weight (M) of the substance. MB = m/nB, where m is the total mass of a sample of a pure substance and nB is the amount of substance B expressed in moles, is the formula for this equation. Pure substance falls under the definition. You can find out how much a compound weighs in moles by looking at its molar mass. To put it another way, it provides the grams of a substance per mole.
Calculation:58.44 g/mol
The mass of a mole of sodium chloride is 6.02 x 1023 formulae.
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what are two other names for the light independent reactions?
Answer: The Calvin cycle and the Calvin-benson cycle
Explanation:
What is the balanced equation for h2o2 → h2o o2?
The balanced chemical equation for the decomposition of hydrogen peroxide (H2O2) into water (H2O) and oxygen (O2) is: for H2O2 → H2O O2 is 2H2O2 → 2H2O + O2
This equation shows that two molecules of hydrogen peroxide (H2O2)decompose into two molecules of water and one molecule of oxygen. The coefficients in front of each molecule indicate the stoichiometry, or the ratio of the number of moles of each substance involved in the reaction. This equation is balanced because the number of atoms of each element on both sides of the equation is the same, and there are 2 hydrogen atoms, 4 oxygen atoms on both sides. It's important to note that the decomposition of hydrogen peroxide is an exothermic reaction, meaning it releases heat energy, and it is catalyzed by enzymes such as catalase.
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Which term describes the phase change that occurs when intermolecular forces (attractions) completely overcome kinetic energy (motion) and the material has little to no motion?
Explanation:
If the kinetic energy is less than the attractive forces, a liquid or solid will form.
The average kinetic energy of the particles in a solid is very less almost negligible this is because they have high attractive forces between their molecules as they are tightly packed in regular lattices and are vibrating about their mean positions.
Therefore, freezing of a liquid or the sublimation of a gas results in the formation of a solid. These two phase changes result in the overcoming of K.E completely.
Answer:
freezing
Explanation:
7. Identify the precipitate in the following reaction:
MgCl₂ (aq) + 2NaOH (aq) → 2NaCl (aq) + Mg(OH)2 (s)
The precipitate in the reaction between MgCl2 (aq) and 2NaOH (aq) is Mg(OH)2 (s).
Identify the precipitate in the following reaction?The precipitate in the reaction between MgCl2 (aq) and 2NaOH (aq) is Mg(OH)2 (s).When MgCl2 (aq) and 2NaOH (aq) are mixed together, a double displacement reaction occurs, which causes the ions to switch partners.The products of this reaction are 2NaCl (aq) and Mg(OH)2 (s).MgCl2 (aq) is a soluble salt, so it is in the aqueous state, while 2NaOH (aq) is also a soluble salt, so it is also in the aqueous state.When these two compounds are mixed, the Mg2+ ion in MgCl2 (aq) switches with the 2Na+ ion in 2NaOH (aq), resulting in 2NaCl (aq) and Mg(OH)2 (s).Mg(OH)2 (s) is an insoluble salt, which causes it to form a precipitate.The precipitate Mg(OH)2 (s) appears as a white solid that is insoluble in water and settles to the bottom of the container.The reaction can be described as follows: 2MgCl2 (aq) + 2NaOH (aq) → 2NaCl (aq) + Mg(OH)2 (s).To learn more about The precipitate reaction refer to:
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what strategies could you include to reduce toxic material and hazard chemical use and employ life cycle management approaches?
Toxic materials and hazardous chemicals pose a threat to human health and the environment, so it's important to reduce their use and manage them properly. Here are some strategies that can help achieve this goal:
Substitution: Find safer alternatives to toxic materials and hazardous chemicals. For example, replace hazardous cleaning chemicals with safer, eco-friendly products.
Minimization: Reduce the amount of toxic materials and hazardous chemicals used. This can be achieved by using less product, improving processes to reduce waste, or using more efficient equipment.
Life Cycle Assessment: This approach considers the entire life cycle of a product or process, from raw materials to disposal, to identify opportunities for reducing the use of toxic materials and hazardous chemicals.
Recycling and Reuse: Implementing recycling and reuse programs can reduce the amount of waste generated, including toxic materials and hazardous chemicals, and help conserve resources.
Proper Storage and Handling: Proper storage and handling of toxic materials and hazardous chemicals is crucial to minimize exposure and prevent accidental releases. This includes proper labeling, segregation, and ventilation.
Employee Training: Train employees on the safe handling and disposal of toxic materials and hazardous chemicals. This will help to ensure that they are used and disposed of properly, minimizing risk to health and the environment.
Regulation Compliance: Ensure that your organization is in compliance with all relevant regulations, including those related to the storage, handling, and disposal of toxic materials and hazardous chemicals.
Implementing these strategies can help reduce the use of toxic materials and hazardous chemicals, minimize their impact on health and the environment, and ensure their safe and proper management.
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why does the potential energy increase when the magnets are against each other but are from the opposite direction of the magnetic force??
The potential energy is increased because their ability to do work on each other is not increased. Potential energy is decreased because moving magnets apart always decreases potential energy.
What is meant by potential energy?
Potential energy is a form of stored energy that is dependent on the relationship between different system components.When a spring is compressed or stretched, its potential energy increases.If a steel ball is raised above the ground as opposed to falling to the ground, it has more potential energy.The position, organization, or state of the object or substance determines the amount of stored energy. It can be pictured as energy with the "potential" to perform labor.Any object that is raised from rest has energy that can be released at a later time; for this reason, it is referred to as potential energy.To learn more about potential energy refer to
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How does the melting points of an impure sample of a substance compare to the melting point of a pure sample of the same substance?
a) The two melting points are the same but the impure sample has a broader range.
b) The two melting points are the same but the impure sample has a sharper range.
c) The impure sample has a higher melting point.
d) The impure sample has a lower melting point with a broader range.
e) The impure sample has a lower melting point with a sharper range.
The melting points of an impure sample is a) The two melting points are the same but the impure sample has a broader range.
Impure materials generally tend to have a barely decrease melting factor than the natural substance, and a broader melting temperature range. Pure materials may be diagnosed through evaluating the melting factor located withinside the test with posted reference records of what the melting factor need to be. Impurities, even if found in small amounts, commonly decrease the melting factor and expand the melting factor range. A huge melting factor range (extra than 5°C) commonly shows that the substance is impure; a slim melting factor range (O. 5-2°C) commonly shows that the substance within reason natural.
Thus, option a is the correct choice.
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which line must the temperature and pressure have crossed if a liquid sample of x is observed to boil?
Along the AB line. The solid line between points B and C is the same as the temperature dependence graph of liquid vapor pressure. It contains all combinations of temperatures and pressures at which liquids boil. At any point along this line, liquid boils to form gas and gas condenses to form liquid at the same rate.
Boiling Water ProcessIn the general process of boiling water, we need energy from heat. This energy then makes the bonds of the water molecules begin to break free and the molecules spread out.
the process of boiling water doesn't happen instantly. Before the water reaches the boiling point at 100℃ and bubbles so actively, air bubbles start to appear before the boiling point is reached.
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What are ionic bonds answers?
Ionic bonds is also called electrovalent bonds because the bond is made between the atoms with opposite charges and the forces acting between them s electrovalent force.
Ionic bond, also called electrovalent bond, is he bonding force that is held in between the two charged species. this is the force that is generated between the two charged species and it is particular that one has excess of electrons and the other one has loss of electrons so that they can generate opposite charges between them in order to attract them to each other. this is the strongest force between the atoms. ionic bonds have the most attractive force in the atom and the most strong it. by this primary information, we can firmly consider that ionic bonds are called electrovalent bonds because the bond is made between the atoms with opposite charges and the forces acting between them as electrovalent force.
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How many grams are in 1.42 moles of CO2?
There are 62.48 grams in 1.42 moles of carbondioxide.
How to calculate mass?The mass of a substance can be calculated by multiplying the number of moles in the substance by molar mass.
Moles in chemistry is the International System of Units, the base unit of amount of substance i.e. the amount of substance of a system which contains exactly 6.022 × 10²³ elementary entities.
mass = no of moles × molar mass
According to this question, there are 1.42 moles of carbondioxide given. The mass of the gas can be calculated as follows:
molar mass of carbondioxide = 44g/mol
mass = 1.42 × 44 = 62.48g
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