Question

moles of chalk do you have when you have 10 grams before and 8 grams after writing your name?

Answer 1

Moles of chalk do you have when you have 10 grams before and 8 grams after writing your name?

Solution.

$\mathrm{u}[\mathrm{CaCO}_3] = \mathrm{m}[\mathrm{CaCO}_3] / \mathrm{M}[\mathrm{CaCO}_3]$, on the spelling of the name where spent $10\mathrm{g} - 8\mathrm{g} = 2$ grams of chalk, then

$\mathrm{u}[\mathrm{CaCO}_3] = 2 / 100 = 0.02 \mathrm{~mol}.$

**Answer:** on the spelling of the name was spent 0.02 mol of chalk.