Describe the freedom of movement of particles as a substance changes states of matter from solid to liquid to gas.

Answer:

1) Least reactive 2) Halogens 3) Nonmetals

Explanation:

Answer:

Copper(II) chloride (CuCl2) reacts with several metals to produce copper metal or copper(I) chloride (CuCl) with oxidation of the other metal.

Explanation:

There are two types of chemical compound one is covalent compound and  other is ionic compound. The formula for the compounds: copper(I) chloride and copper (II) chloride are CuCl and CuCl[tex]_2[/tex] respectively.

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion. Covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron.

The chemical formula for Copper(II) chloride is  (CuCl[tex]_2[/tex]). The chemical formula for copper(I) chloride (CuCl). The number in the roman is the oxidation state of the metal.  Copper(II) is called cupric,  copper(I) is called cuprous.

Therefore, the formula for the compounds: copper(I) chloride and copper (II) chloride are CuCl and CuCl[tex]_2[/tex] respectively.

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Answer:

12.32 L.

Explanation:

The following data were obtained from the question:

Mass of CH4 = 8.80 g

Volume of CH4 =?

Next, we shall determine the number of mole in 8.80 g of CH4. This can be obtained as follow:

Mass of CH4 = 8.80 g

Molar mass of CH4 = 12 + (1×4) = 12 + 4 = 16 g/mol

Mole of CH4 =?

Mole = mass/Molar mass

Mole of CH4 = 8.80 / 16

Mole of CH4 = 0.55 mole.

Finally, we shall determine the volume of the gas at stp as illustrated below:

1 mole of a gas occupies 22.4 L at stp.

Therefore, 0.55 mole of CH4 will occupy = 0.55 × 22.4 = 12.32 L.

Thus, 8.80 g of CH4 occupies 12.32 L at STP.

Answer:

physical change

.............

Answer:

One of the byproducts of respiration is CO2, this is the opposite of photosynthesis. It is not unusual for plants to stop taking in carbon dioxide to uptake small amounts of oxygen at night. In the event that plants cease to take up CO2 all together, they will cease to convert sunlight into carbohydrates, and die.17‏/01‏/2019

Explanation:

Answer:

includes the coefficients that are needed for balancing the equation.

Explanation:

A chemical equation can be used to solve stoichiometry problems provided that it includes the coefficients that are needed for balancing the equation.Hence, Option (C) is Correct.

An equation that has an equal number of atoms of each element on both sides of the equation is called a balanced chemical equation, i.e., the mass of the reactants is equal to the mass of the products.

Therefore, A chemical equation can be used to solve stoichiometry problems provided that it includes the coefficients that are needed for balancing the equation.Hence, Option (C) is Correct.

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Answer:

The 5th answer

Explanation:

This can be easily remembered by

A + B --> AB

ex:

2Na(s) + Cl2(g) --> 2NaCl(s)

Answer:

D

Explanation:

The two atoms must be of the same element in order for two atoms  to share electrons equally in a chemical bond.

An element is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.

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Answer:

its potassium acetate

Explanation:

.............................

Answer:

Explanation:

There are key organs and system that assist in ensuring the body maintains homeostasis in the case of water-salt balance.

The excretory system: When one sweats, a lot of water content of the blood can drop (this is what causes the individual to be thirsty). In order to maintain a certain water-salt balance, the excretory system passes some salt out of the body in the form of urine (this is the reason the urine is usually yellowish but small in volume during the summer).

Endocrine system: When water content of the blood drops, vasopressin (also called antidiuretic hormone) is released into the bloodstream stimulating the kidneys to conserve water and release less urine (as said earlier). However, if the body is hydrated, less vasopressin is released and more water is passed in the urine.

Answer: 28 inner transition elements

Answer: It is a negative ion that has one more valence electron than a neutral bromine atom.

Explanation: I Hope that helped !!

Answer:

1. Mechanical energy

2. Heat/thermal energy

3. Electrical energy

4. Heat energy

5. Electrical energy

Explanation:

Hope this helped!

Answer:

lose electron

Explanation:

If the oxidation number is positive, this means that the atom loss electrons.

Losing electrons makes the atom lose some of its negative charge and become more positively charged.

Hope that helps.

Answer:

b

Explanation:

I used my passion and skill for learning to do a quick google search :P

Answer:

The answer is B

Explanation:

Answer:

Option 1.

Explanation:

3.6cm * 1inch/2.54 cm = 1.417 inch

Answer:

Because it's a system in the solar areas.

Explanation:

Im just tryna sound smart, I actually have no clue

Answer:

The Latin word for the Sun is Sol, so we call this system the Solar System. He showed that it was very likely that all the planets moved around the Sun. This time even more people thought Galileo may be right and that the Earth really did move around the Sun.

Explanation:

There are many planetary systems like ours in the universe, with planets orbiting a host star. Our planetary system is named the "solar" system because our Sun is named Sol, after the Latin word for Sun, "solis," and anything related to the Sun we call solar.

Hope That Helps :0

Answer:

Yes

Explanation:

Chemical equation:

CuO  + H₂    →      Cu + H₂O

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by French chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

For example:

In given reaction:

CuO  + H₂    →      Cu + H₂O

there are 1 copper atoms, one oxygen atoms and two hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.

Answer: mitochondria

Explanation:

it affects the cell because it produces the power of the cell, let me know if this helpes

Answer:

A. Food

Explanation:

Water alone does not give energy, Carbon Dioxide cannot be consumed healthily, and photosynthesis is for plants.

Answer:

9.26g of chlorine

Explanation:

Answer:

Magnetic domains fall into alignment and it begins to attract other objects.

Answer:

46.5 J

Explanation:

I did it in stemscopes.

Answer:

in quantum mechanics, electrons exist in a cloud-shaped area outside the nucleus.

Explanation:

Answer:

Isotopes are atoms that have different number of neutrons, so they have a different mass number than the other atoms in an element.

Answer:

The answer is C. Hope this helps you out!

Answer:

C. Respiration

✂---------------

Answer:

in contact

Explanation:

Fields allow some objects to exert force on each other even when they are not contact with one another.

The region of space where the effect of a force is felt is know as a field.

Fields allow some objects to exert forces on each other even when they are not in contact .

Answer: The ratio of carbon to bromine atoms  in the molecule is 3:1

Explanation:

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass. It can be decomposed into simpler constituents using chemical reactions.

Chemical formula shows the elements in a compound and the relative proportions of those elements.

The chemical formula given for the compound is [tex]C_3H_6BrCl[/tex] which means the ratio of carbon to bromine atoms is 3: 1.

Thus the ratio of carbon to bromine atoms  in the molecule is 3:1