What 2 main factors drive the water cycle? view attachment

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:

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

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:

1. Mechanical energy

2. Heat/thermal energy

3. Electrical energy

4. Heat energy

5. Electrical energy

Explanation:

Hope this helped!

Answer: 28 inner transition elements

Answer:

its potassium acetate

Explanation:

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

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

Answer:

C

Explanation:

Because i just had to do this on my assignment and got 100

Answer:

hey , its option c because in chemical reaction colour + evolution of gas takes place + temp. + precipitation. but also light can come in the case of chemical reaction.

Answer:

physical change

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

Answer:

The answer is C. Hope this helps you out!

Answer:

C. Respiration

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Answer:build up

Explanation:

Answer:

The sediments will be transformed into rock.

Explanation:

Hope this helps, Good Luck, let me know if i am wrong, and Brainliest?

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:butterflies

Explanation:

Nah man you are on your own.

Answer:

A. Food

Explanation:

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

Answer:

Option 1.

Explanation:

3.6cm * 1inch/2.54 cm = 1.417 inch

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:

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:

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:

46.5 J

Explanation:

I did it in stemscopes.

Answer:

1) Least reactive 2) Halogens 3) Nonmetals

Explanation:

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:

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

Explanation:

Answer:

5.5 × 10²² formula units Al₂O₃

General Formulas and Concepts:

Chemistry - Stoichiometry

Explanation:

Step 1: Define

9.3 g Al₂O₃

Step 2: Define conversions

Avogadro's Number

Molar Mass of Al - 26.98 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of Al₂O₃ - 2(26.98) + 3(16.00) = 101.96 g/mol

Step 3: Convert

[tex]9.3 \ g \ Al_2O_3(\frac{1 \ mol \ Al_2O_3}{101.96 \ g \ Al_2O_3} )(\frac{6.022 \cdot 10^{23} \ formula \ units \ Al_2O_3}{1 \ mol \ Al_2O_3} )[/tex] = 5.4928 × 10²² formula units Al₂O₃

Step 4: Check

We are given 2 sig figs. Follow sig fig rules.

5.4928 × 10²² formula units Al₂O₃ ≈ 5.5 × 10²² formula units Al₂O₃

Answer: mitochondria

Explanation:

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

Answer:

6

Explanation:

Answer:

9.26g of chlorine

Explanation:

Answer:

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

Answer:

The 5th answer

Explanation:

This can be easily remembered by

A + B --> AB

ex:

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