# How many moles are in 200 grams of fluorine?

Apr 27, 2016

10.5263 moles

#### Explanation:

Fluorine has atomic mass of 18.998403 g/mol rounding of we consider 19 g/mol

So,

In 19 g fluorine is 1 mole
so in 200g fluorine $\frac{200}{19}$ moles are there

which equals 10.5263 moles

Apr 27, 2016

Assume that:
n = number of moles
m = mass of substance
M = molar mass (same as atomic weight on periodic table)

200 grams of fluorine (m) has been provided for you.

The molar mass (M) of fluorine is 19.0 g/mol.

Therefore, the number of moles (n) for fluorine is:
[n = 200 grams $\div$ 19.0 g/mol] = 10.5 moles.
Note: the answer is rounded to 3 significant figures

There are 10.5 moles in 200 grams of fluorine.