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Lorico [155]
3 years ago
15

Please help me with my 8th grade chemistry, I'm really confused

Chemistry
1 answer:
saveliy_v [14]3 years ago
7 0

Answer:

The answer would be C, in both chemical and physical change, because everything is made up of matter. So if you have a chemical or physical change, that doesent change the total mass of your product ever.

Explanation:

You might be interested in
The process, when an atom gains electrons is called
max2010maxim [7]

Answer:

When an atom gains/loses an electron, the atom becomes charged, and is called an ion. Gaining an electron results in a negative charge, so the atom is an anion. Losing an electron results in a positive charge, so atom ion is a cation

Explanation:

Answerd the question : ion

8 0
3 years ago
Correctly identify the generic formula for a double replacement reaction.
devlian [24]

Answer:

AB + CD → AC +BD

Explanation:

Double replacement:

It is the reaction in which two compound exchange their ions and form new compounds.

AB + CD → AC +BD

Example:

The following reaction is double replacement reaction.

CaCO₃ + 2HCl  → CaCl₂ + H₂CO₃

While,

A + B → AB

Synthesis reaction:

It is synthesis reaction. The reaction in which two or more simple substance react to give one or more complex product.

AB → A + B

Decomposition:

It is the decomposition reaction. The reaction in which one reactant is break down into two or more product.

AB + C → AC + B

Single replacement:

It is the reaction in which one elements replace the other element in compound.

7 0
3 years ago
How many atoms are there in 8.08 moles of carbon dioxide
sertanlavr [38]

Answer:

145.97×10²³ atoms

Explanation:

Given data:

Number of moles of CO₂ = 8.08 mol

Number of atoms of CO₂ = ?

Solution:

1 mole of CO₂ contain 1 mole C atom.

8.08 mole contain 8.08× 1 = 8.08 mole of C atom.

1 mole of CO₂ contain 2 moles of O atom.

8.08mole contain 8.08×2 = 16.16 mole of O atom.

Total number of moles of atoms = 8.08 mole + 16.16 mole

Total number of moles of atoms = 24.24 mol

Number of atoms of CO₂:

1 mole of any substance contain 6.022×10²³ atoms.

24.24 mol ×6.022×10²³ atoms / 1 mol

145.97×10²³ atoms

7 0
3 years ago
Oxidation is now defined in terms of change of oxidation number. Explore how earlier definitions of oxidation and reduction may
Sav [38]

Answer:

4

Explanation:

oxidation number resolved 4

5 0
3 years ago
What happens to a sample of matter when it's particles lose kinetic energy?
sukhopar [10]
It is unable to mske movement. It depends on the type of matter.
4 0
3 years ago
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