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notsponge [240]
2 years ago
15

How many mol of Cl are in 10.0 g of Cl? The molar mass of Cl is 35.45 g/mol

Chemistry
2 answers:
Delvig [45]2 years ago
6 0

Answer:

\boxed {\boxed {\sf 0.282 \ mol \ Cl}}

Explanation:

The molar mass, or mass of 1 mole of a substance, is used to convert grams to moles. We are given the molar mass of chlorine. It is 35.45 grams per mole.

We convert using dimensional analysis, so we must set up a conversion factor using the molar mass.

\frac { 35.45 \ g \ Cl}{1 \ mol \ Cl}

We are converting 10.0 grams of chlorine to moles, so we must multiply the conversion factor by this value.

10.0 \ g  \ Cl* \frac { 35.45 \ g \ Cl}{1 \ mol \ Cl}

Flip the conversion factor. The result is equivalent and allows us to cancel the units of grams of chlorine.

10.0 \ g  \ Cl* \frac {1 \ mol \ Cl}{ 35.45 \ g \ Cl}

10.0 * \frac {1 \ mol \ Cl}{ 35.45 }

\frac {10.0 }{35.45} \ mol \ Cl

0.282087447 \ mol \ Cl

The original value of grams (10.0) has 3 significant figures, so our answer must have the same. For the number we found, that is the thousandth place. The 0 in the ten-thousandth place tells us to leave the 2 in the thousandth place.

0.282 \ mol \ Cl

Approximately <u>0.282 moles of chlorine</u> are in 10.0 grams of chlorine.

postnew [5]2 years ago
5 0
There are 3.545 mol in 10 g of CL
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