Question

if molar mass of calcium is 40 g? what is mass of 3 moles of calcium?​

Answer 1

Explanation:

Given:-

molar mass of calcium = 40 g

To find:-

mass of 3 moles of calcium

Mass of 1 mole of calcium = 40g

Mass of 3 moles of calcium = 40 × 3 = 120g/mol

$\rule{200}{1}$

◼ The mass of substance containing the same number of particles as there are atoms in exactly 12.000 g of C-12.

◽The mole is the unit of amount.

Answer 2

Answer:

120g

Explanation:

n = mass of element. / molar mass

3 = mass of element / 40

mass of element = 3 * 40 = 120g