When water is added to anhydrous copper sulfate, two things will happen that is, Hydration and Formation of a blue color.
What is Anhydrous copper sulphate?
Anhydrous copper sulphate is a white crystalline compound used as an oxidizing agent and as a catalyst in organic chemistry. It is also used as a fungicide, herbicide, and insecticide in horticultural applications. Copper sulphate is a salt composed of copper and sulphuric acid. It is highly water-soluble and has a distinct blue-green color when dissolved in water. When anhydrous, it is a white powder. Anhydrous copper sulphate can be produced by heating the hydrated form of the salt above 250°C.
When water is added to anhydrous copper sulphate, two things will happen. Firstly, the anhydrous copper sulphate will dissolve in the water, forming a blue-colored solution. This indicates that the water is indeed present. Secondly, the anhydrous (without water) copper sulfate will absorb water and become hydrated, forming copper sulfate pentahydrate (CuSO4 * 5H2O).
Therefore, when water is added to anhydrous copper sulphate Hydration and Formation of a blue color will occur.
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Does copper react with O2?
Metal oxides are created when metals and airborne oxygen combine. For instance, when heated in the air, copper interacts with oxygen to form copper oxide is called oxidation reaction.
An oxidation-reduction reaction, often known as a redox reaction, occurs when two chemical species exchange electrons (the atoms, ions, or molecules involved in the reaction). We are always surrounded by redox reactions, which include oxidation and reduction in the burning of fuels, metal corrosion, photosynthesis, and cellular respiration.
Slowly oxidising in air, copper corrodes and develops a brown or green patina. The procedure is more quicker and mostly yields black copper oxide at higher temperatures. Hydrogen gas, a fairly powerful reducing agent, has the ability to decrease the oxide, creating a smooth, shining copper surface.
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Do substances that heat up quickly normally have high or low specific heat capacities?
(a) Visit in your area and collect the following articles. (See lesson 4)
(i) Copper wire, (ii) Sulphur, (iii) Aluminium sheet, (iv) Iron nail, (v) Iodine crystal
Answer the following:
(a) Classify these articles into metals, and non-metals
(b) There is a brown coating on the iron nail. Explain the reason
(c) Identify good conductors of heat, and define conductivity.
(d) Write down the reaction of metals with water.
(e) Write down the reactions of non-metals with water
The periodic chart has many different types of elements. Some elements are metals, some are nonmetals, and yet others are metalloids. Therefore, in below given ways we answers can be explained.
What is metal ?Metals are hard, conduct electricity, are ductile, lustrous, and malleable materials.
Since metals have free electrons that's why they can conduct electricity. Since atoms in metals are very closely packed in a definite crystal solid. It is not brittle that is it can not be broken down easily.
Among given elements:
a)metals: Copper, Aluminium, Iron
non metals: sulfur, iodine
b) There is a brown coating on the iron nail, due to rusting
c) good conductors of heat: copper
d)M+H[tex]_2[/tex]O[tex]\rightarrow[/tex] M(OH)/M(OH)[tex]_2[/tex]
Therefore, in above given ways we answers can be explained.
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Watch the animation in the activity and rank the events in the order that they occur as equilibrium is reached. Rank from the first step to the last step. To rank the steps that occur simultaneously, overlap them.
The sequence in which the events are ranked in order to attain equilibrium is as follows.
Salt is first dissolved into its cations and anions by hydration of cations and anions.
In the second stage, hydrated anions and cations start to form a solid salt.
The rate of dissolution is equal to the rate of deposition in the last stage.
White dwarf star (WD) in a binary system is the initial state of the supernova. A companion star orbits the WD, and as it does so, it is accreting material onto it and creating an accretion disc.
Growing WD with accretion disc: The accretion disc expands as the partner star keeps dumping stuff onto the WD. The WD grows larger and more gigantic as a result of this.
WD at Chandrasekhar limit: When a WD hits its Chandrasekhar limit, it no longer has the ability to support any more mass without collapsing. When the WD has a mass that is around 1.4 times that of the Sun, this happens.
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in 10 seconds, a total of 5 waves crash onto the shore of a beach. The distance between each wave crest on the water is 8 meters.
Find the:
A. Wavelength:
B. Period:
C. Frequency
D. Wave speed
In ten seconds total of 5 waves crash onto the shore of the beach .
The distance between each wave crest on the water is 8 meters.
What is wavelength?The distance between two wave crests, or the wave length, is the measurement of this distance.
We are aware that there are 8 metros between each wave's crest.
There are five wave crests in all, with the first and second wave crests separated by eight metros.
the second and third wave crests are separated by 8 metros.
Wave length is therefore 8 + 8 = 16 metros
wavelength:
The distance between identical points (adjacent crests) in successive cycles of a waveform signal travelling through space or along a wire is known as the wave length. This length is typically defined in wireless systems in metres (m), centimetres (cm), or millimeters (mm) (mm). The wavelength is more frequently expressed in nanometers (nm) for gamma radiation (), visible light (UV), infrared (IR), and ultraviolet (UV).To learn more about wavelength refers to;
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The following figure shows molecular energy distributions for two temperatures and the activation energy for a reaction.
Option a - molecules with too little energy to react represent the unshaded area under the curves.
A molecule is a collection of chemically bonded atoms. The atoms in a molecule can be of the same element (such as diatomic oxygen, O2) or different elements (such as water, H2O). The chemical bond between the atoms can be covalent bond, in which the atoms share electrons, or ionic, in which the atoms transfer electrons.The number of molecules in a sample of a substance is known as the Avogadro's number (NA), which is a fundamental constant of nature and is approximately 6.022 x 10^23 per mole. The Avogadro's number is used to convert between the number of atoms or molecules in a sample and the amount of substance measured in moles.When it comes to energy, the total energy of a sample of a substance is typically measured in terms of its internal energy (U), which is the sum of the kinetic and potential energies of all the atoms or molecules in the sample.
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the complete question is :
The following figure shows molecular energy distributions for two temperatures and the activation energy for a reaction. The un-shaded regions beneath the curves signify
A- molecules with too little energy to react. a molecular energy
B- distribution at the lower of the two temperatures shown.
C-molecules with enough energy to react. a molecular energy
D-distribution at the higher of the two temperatures shown.
What type of reaction is S O2 → SO2?
S+O2 → SO2 (Sulphur dioxide) is a type of combination reaction of various reactions defined in chemistry.
What is a combination reaction?When two or more elements or compounds combine to create a single product, the reaction is termed as a direct combination reaction occurring as per the first line . Equations of the form X + Y XY are used to depict these reactions. A combination reaction occurs when two or more components combine to form a single compound.
Due to their high reactivity, oxygen and halogens are prone to combine with other elements to form new substances generally through Combination reaction.
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What Are The Differents Between Multievlent Elements and Polyatomic Ions with examples?
Answer:
The key difference between polyvalent element and polyatomic ion is that polyvalent elements have more than one valency whereas polyatomic ions have more than one atom that are covalently bonded to each other.
24. All solutions are
a. homogeneous
c. colorless
b. heterogeneous
d. odorless
Answer:
They can't be in all avobe of this beacuse they may be homogeneous , colorless , heterogeneous and may be odorless .
So they cant be any one.
By :- Utsav Xettri
Answer:
A it was so hard to answer
Area Temperature (ºC) X 22 Y 18 Z 18 Air will move from _____. (1 point) Responses area Y to area X area Y to area X area Y to area Z area Y to area Z area Z to area Y area Z to area Y area X to area Z area X to area Z Skip to navigation
Area Temperature (°C) X 22 Y 18 Z 18 , The air will move from area Y to area X. Therefore, option A is correct.
What is pressure gradient?The term pressure gradient is define as the change in pressure with horizontal distance. The SI Unit of pressure gradient is Pascal per meter. Mathematically, it's the gradient of pressure as a function of position.
The pressure gradient is the rise or fall in pressure. When pressure varies over a short distance, the gradient is steep, and when it changes over a long distance, it is gentle.
According to given data, temperate of area X is greater than both area Y and Area Z.
Thus, air will move from area Y to area X.
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How many moles of CO2 will be formed from 2 moles of CH4?
2 moles of CH4 will produce 8 moles of CO2. moles of CO2 will be formed from 2 moles of CH4.
what is moles ?
Moles are small, burrowing animals that belong to the family Talpidae. They are found all over the world in a variety of environments, ranging from grasslands to forests and even mountain areas.
They are generally characterized by their short, stocky bodies, short limbs, and powerful claws that they use to dig tunnels and burrows. Moles have poor eyesight, but their sense of smell and hearing are highly developed. They feed on a variety of insects, worms, and other small invertebrates, and their diet may also include some plant matter.
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Could anyone help me please this is confusing
Earth is the third planet from the sun. Why is this an insignificant claim
Answer:
Explanation:
The statement "Earth is the third planet from the sun" is a scientific fact that is widely accepted in the scientific community. However, it is an insignificant claim because it does not provide any new information or understanding about Earth or our solar system. It is also a well-known fact that can be easily verified by reference to basic astronomical knowledge and observations. It is not a new discovery, nor does it contribute to any scientific advancement or understanding.
What atoms are found in CH4 methane?
Methane is a chemical molecule with the molecular formula CH4 (one carbon atom bound to four hydrogen atoms; pronounced MEH-thayn in the US and MEE-thayn in the UK).
Methane, pronounced MEH-thayn in the US and MEE-thayn in the UK, is a chemical substance having the formula CH4 (one carbon atom bonded to four hydrogen atoms). The simplest alkane and the primary component of natural gas, it is a group-14 hydride. Methane is a fuel that is commercially appealing due to its relative abundance on Earth, but its gaseous state under normal temperature and pressure makes its capture and storage difficult. Methane is a naturally occurring gas that is produced by both geological and biological processes. It can be found underground and under the seafloor.
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A physical change is a change of matter from one form to another without a change in chemical properties
The statement that a physical change is a change in matter's form without a corresponding change in its chemical properties is valid.
Physical modifications examples include:
1. changing a substance's condition, like when ice melts to form liquid water or when water boils to form steam
2. altering a substance's dimensions or shape, such as by sawing a piece of wood or shattering a glass
3. combining two or more things, as when you swirl sugar into coffee
4. separating a combination into its constituent elements, as when sand is filtered out of water.
A physical change does not affect the material's atoms or molecules, and the chemical property composition of the substance does not change. By undoing the physical transformation, such as by turning liquid water into ice, the substance can be returned to its former state. It's vital to remember that some changes, like rusting, burning, or rotting, may appear to be physical changes but are actually chemical changes. These alterations in chemical composition and attributes occur as a result of a chemical reaction in which the original ingredients are changed.
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Question - A physical change is a change of matter from one form to another without a change in chemical properties. State true or false.
How many formula units are in 3.52 moles of NaF
The number of formula units in 3.52 moles of NaF is 2.119 × 10²⁴ formula units.
How to calculate formula units?Formula unit refers to the empirical formula of an ionic compound (that does not possess individual molecules) for use in stoichiometric calculations.
The formula unit of a substance can be calculated by multiplying the number of moles in the substance by Avogadro's number.
According to this question, there are 3.52 moles of NaF in a substance. The formula unit can be calculated as follows:
formula unit of NaF = 3.52 × 6.02 × 10²³
Formula unit = 2.119 × 10²⁴ formula units.
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Identify the atom below.
Be
C
H
He
Answer:
He
Explanation:
Helium is the only atom on the list with 2 protons and 2 neutrons
strontium-90 is a byproduct in nuclear reactors fueled by the radioisotope uranium-235. the half-life of sr-90 is 28.8 yr. what percentage of a sr-90 sample remains after 86.4 yr?
The percentage of an sr-90 sample that remains after 86.4 yr is y=0.228μg
In nuclear reactors powered by the radioisotope uranium-235, strontium-90 is a byproduct. 28.8 years is the half-life of sr-90.
k= 0.693/t 1/2
k=0.693/ 28.1
=0.0247/year
(i) After 10 years, let xμ be the concentration of
Sr90
k=2.303/t log[A]°/[A]
0.0247=2.303/ 10years log( 1/x )
x=0.782μg
(ii) After 86.4 years, let yμ be the concentration of Sr90
k=2.303/t log[A]°/[A]
0.0247=2.303/86.4years log( 1/y )
y=0.228μg
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What must be done to calculate the enthalpy of reaction? Check all that apply.
To calculate the enthalpy of the given reaction;
The second equation must be halved.The second equation must be reversed.The third equation must be halved.The third equation must be reversed.The overall enthalpy of the given chemical reaction, ΔHrxn = -351.8 kJ
What is the enthalpy of a reaction?The heat changes that take place during a chemical reaction at constant pressure are known as the enthalpy of the reaction. It is a helpful thermodynamic unit of measurement for figuring out how much energy per mole is emitted or created during a reaction.
The overall enthalpy of the reaction is:
ΔHrxn = (-393) + (0.5 * 566) + (-483.6 * 0.5) kJ
ΔHrxn = -351.8 kJ
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a reaction may be carried out so that a gaseous product is collected over water. which statement describes how to calculate the pressure due to the product gas alone?
The pressure of the gaseous product alone can be calculated by subtracting the pressure of the water vapor, also known as the vapor pressure of water, from the total pressure of the gas collected over water.
When a reaction is carried out so that a gaseous product is collected over water, the pressure of the gaseous product can be affected by the pressure of the water vapor present in the collection container. To calculate the pressure due to the product gas alone, one must subtract the pressure of the water vapor (also known as the vapor pressure of water) from the total pressure of the gas collected. The vapor pressure of water is dependent on the temperature, it can be looked up in a table or calculated using an equation, and it can be used to determine the pressure of the gaseous product alone. This is important to know in order to accurately measure the amount of product gas produced in the reaction.
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HELPP MEE PLEASEE !!!!
At what group # does the ionic radius suddenly increase dramatically from the lowest to the highest? Why?
Explanation:
Relations kmsksodnnwjsieneoe
How many atoms are there in 1 mole of H2O?
Water with chemical formula H2O is formed by the combination of two hydrogen atoms and one oxygen atom. so there are total three atoms in one mole of H2O.
Water is formed by the combination of Hydrogen and Oxygen. According to the Law of Constant Proportions, the atoms present in a compound are combined in a fixed ratio to form that compound. As a compound of H2O is formed by the combination of H and O in the ratio of 2 : 1. Therefore, three atoms are there in one mole of H2O. Water is composed of the chemical elements hydrogen and oxygen. It exists in gaseous, liquid, and solid states. It is one of the most plentiful and essential of compounds. A tasteless and odorless liquid at room temperature, it has the important ability to dissolve many other substances.
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What is the relationship between changes in air pressure and wind speeds?
When a high- and a low-pressure air mass are close together, air moves slowly from high to low pressure.
When a high- and a low-pressure air mass are far apart, air moves quickly from low to high pressure.
When a high- and a low-pressure air mass are far apart, air moves quickly from high to low pressure.
When a high- and a low-pressure air mass are far apart, air moves slowly from high to low pressure.
Answer: A
Explanation:
How many moles of carbon dioxide are in 4 Litre at STP?
4 Liters of CO2 at STP (Standard temperature pressure)is equal to 0.44 moles of CO2. STP .
At standard temperature and pressure (STP), 1 mole of any gas occupies a volume of 22.4 Liters. To find the number of moles of a gas in a given volume, you can use the Ideal Gas Law, PV= nRT , where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvins. At STP, the pressure is 1 atm and the temperature is 273 K. So, if we know that V = 4 Liters, we can calculate the number of moles of a gas as: n = (PV) / RT ; n = (1 * 4) / (8.314 * 273) ; n = 0.44 moles of CO2 So, 4 Liters of CO2 at STP is equal to 0.44 moles of CO2.
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when gathering glassware and equipment for an experiment, you should
When gathering glassware and equipment for an experiment, we must follow safety protocols.
Following protocols must be followed while handling glassware and equipment:
carefully read all instructions to understand what equipment is requiredinspect all glassware for chips or cracksclean any glassware that seems dirty Never offer food or drinks in laboratory glassware.To prevent breaking glassware, handle it with care and store it properly.Ensure that containers with positive closures have at least 10% air space.Replace glass connectors with plastic or metal whenever possible.After each use, thoroughly clean and disinfect glassware.Use appropriate hand protection when placing glass tubing into rubber stoppers, corks, or tubing (e.g., gloves or a towel)Hold your hands together tightly to reduce movement in case the glass breaks.To learn more about the ' safety protocol' try the:
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3 similarities and differences between john mallon waterman and chris mccandless
Christopher McCandless, like Rosselini and Waterman, "was a seeker and had an idealistic obsession with the brutal side of nature," the author adds. He lacked common sense, just like Waterman and McCunn. McCandless, in contrast to Waterman, was psychologically stable.
They were both kind, inquisitive, responsible, educated, and bright individuals. They lead quite ordinary lives but have high hopes for the future. Both men had the same plan: to set off on the journey to Alaska. Their Alaskan dreams were all centered on living off the land.
Krakauer saw several parallels between them, including the fact that they were both passionate individuals who misread their emotions.
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Substances that are formed as a result of a chemical reaction are called -------- and are written on the ---------- side of the equation.
A. products
B. Right hand Side
Substances that are formed as a result of a chemical reaction are called products and are written on the right hand side of the equation.
How many moles are in 140 g NH,
A) 0.12 mol NH,
B) 0.33 mol NH,
C) 7.78 mol NH,
D) 6.25 mol NH,
A. A blue hair dye sample was 2.6cm from the pencil line. The water travelled 6.3cm, calculate the Rf. Only type the answer to 2 decimal places.
B. The Rf of purple is 0.58. The solvent travelled 14cm. What distance did the purple ink travel?
C. The Rf of orange is 0.37. The solvent travelled 15.6cm. What distance did the orange ink travel?
Answer:
A. 0.24
B. See the attachment
C. See the attachment
Explanation:
Please find the attachment for detail
Answer:
A. To calculate Rf value:
Rf = distance traveled by blue hair dye / distance traveled by solvent
Rf = 2.6cm / 6.3cm
Rf = 0.41 (to 2 decimal places)
Therefore, the Rf value of the blue hair dye sample is 0.41.
B. To calculate the distance traveled by purple ink:
distance traveled by purple ink = Rf x distance traveled by solvent
distance traveled by purple ink = 0.58 x 14cm
distance traveled by purple ink = 8.12cm (to 2 decimal places)
Therefore, the purple ink traveled 8.12cm.
C. To calculate the distance traveled by orange ink:
distance traveled by orange ink = Rf x distance traveled by solvent
distance traveled by orange ink = 0.37 x 15.6cm
distance traveled by orange ink = 5.77cm (to 2 decimal places)
Therefore, the orange ink traveled 5.77cm.
Which type of intermolecular force forms between polar molecules due to the attraction between partial positive and negative parts of the molecule?
Intramolecular force
Dispersion
Hydrogen
Dipole-dipole
Dipole - Dipole Forces:
The attractive forces present between the positive end of one molecule with the negative end of the other molecule are called dipole - dipole forces.
Polar molecules have charges at different parts of a molecule. These charges attract each other. Therefore, these forces are electrostatic attractions between permanent dipoles in a molecule.
Stronger the dipole - dipole forces, higher the value of thermodynamic properties like melting and boiling points, heat of vaporization, heat of sublimation etc.