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2 years ago

If solid become liquid can it become solid again

Chemistry

1 answer:

velikii [3]2 years ago

3 0

Answer:

Yes! It's because of like freezing and or solidification. It's the phase transition in which a liquid turns into a solid. It's when the temperature is lowered to or below a type of freezing point.

Explanation:

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A compound is found to contain 42.88 % carbon and 57.12 % oxygen by weight. To answer the questions, enter the elements in the o

Ipatiy [6.2K]

Answer:

The empirical formule is CO

Explanation:

Step 1: Data given

Suppose the mass of a compound is 100 grams

Suppose the compound contains:

42.88 % C = 42.88 grams C

57.12 % O = 57.12 grams O

Molar mass C = 12.01 g/mol

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Step 2: Calculate moles

Moles = mass / molar mass

Moles C = mass C / molar mass C

Moles C = 42.88 grams / 12.01 g/mol

Moles C = 3.57 moles

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Moles O = 3.57 moles

Step 3: Calculate the mol ratio

We divide by the smallest amount of moles

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O: 3.57 moles / 3.57 moles = 1

The empirical formule is CO

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