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3 years ago

Type the correct answer in the box.

Chemistry

2 answers:

OlgaM077 [116]3 years ago

7 0

Explanation:

Mass number of an atom means the sum of total number of protons and neutrons present in an atom.

On the other hand, atomic number is the total number of protons present in an atom.

Therefore, mass number of phosphorous is 30 g/mol whereas atomic number of phosphorous is 15 g/mol.

Thus, the mass of 1 mole of phosphorus atoms is 30 grams.

tatiyna3 years ago

4 0

the mass of 1 mole of phosphorus atoms is approximately 30 g

hope this helps :)

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3 years ago

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hram777 [196]

Answer: Carbon dioxide is a pure substance.

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Soda is basically a mixture of water and carbon dioxide. More than 1 type of molecule is present.

Gasoline is a mixture of may gases. More than 1 type of molecule is present.

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2 years ago

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A compound is determined to have the empirical formula C2OH4. If the molar mass of the compound is 132 g/mol, determine the mole

8_murik_8 [283]

Answer: The molecular formula will be $C_6O_3H_{12}$

Explanation:

Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

Empirical weight of $C_2OH_{4}$ is $12\times 2+16\times 1+1\times 4=44g$

Molecular mass of compound is = 132 g

Now we have to calculate the molecular formula.

$n=\frac{\text{Molecular weight}}{\text{Equivalent weight}}=\frac{132}{44}=3$

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3 years ago

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Leona [35]

Answer:

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