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babunello [35]
3 years ago
10

Plzz help me well mark brainliest if you are correct

Chemistry
2 answers:
tia_tia [17]3 years ago
6 0

Answer:

A. non renewable energy sources cannot be used over again and renewable energy sources can be used again

ruslelena [56]3 years ago
4 0

Answer:

A. Nonrenewable energy sources cannot be used over again. Renewable energy sources can be used again.

Explanation:

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mrs_skeptik [129]
The answer is a because the water we use it comes back again
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A molcule is the smallest part of
telo118 [61]

Answer:

compound

Explanation:

A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms.

8 0
3 years ago
Ascorbic acid, or vitamin C (C6H8O6, molar mass = 176 g/mol), is a naturally occurring organic compound with antioxidant propert
Rus_ich [418]

Answer:

The quantity of ascorbic acid found in sweet lime of 49.6 mg does not meet the daily requirement.

Explanation:

To determine the mass of ascorbic acid knowing the number of moles we use the following formula:

number of moles = mass / molecular weight

mass = number of moles × molecular weight

mass of ascorbic acid = 2.82 × 10⁻⁴ × 176

mass of ascorbic acid = 496 × 10⁻⁴ g = 0.0496 g = 49.6 mg

daily requirement of ascorbic acid = 70 - 90 mg

The quantity of ascorbic acid found in sweet lime of 49.6 mg does not meet the daily requirement.

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3 years ago
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What is 0.000980 in scientific notation
JulijaS [17]

Answer:

9.80x10^-4

Explanation:

5 0
3 years ago
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When a radioactive sample decays for 2 half-lives the amount remaining will be ____ of the original?
mash [69]
1/4 of the original.
4 0
3 years ago
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