Question

Help I’m literally failing I need help

Answer 1

Explanation:

Number of moles

= mass ÷ molar mass

= 35.2 g ÷ (24.3 + 32.1 + 16 + 16 + 16 + 16)

= 35.2 g ÷ 120.4

= 0.2924 mole

(For molar mass, use the values given to you)

Answer 2

You just simply need to divide the mass by the molar mass to get your moles! :)

1) determine molar mass

= 24.31 + 32.07 + 4(16.00)

= 120.38 g/mol

2) solve

$mm=\frac{m}{n}\\\\ n=\frac{m}{mm}\\\\n=\frac{35.2g\ MgSO_{4}}{120.38\ g/mol\ MgSO_{4}}\\\\n=0.2924073766$

n = 0.292 moles MgSO₄