Question

Find the number of moles.
1. 25 g of NH3
2. 67 g of CH3OH

please help me!!!

Answer 1

Molar mass of NH3 = 14+1×3=17

Moles of NH3 = mass / molar mass=25/17=1.47mol

Molar mass of CH3OH =12 +1×3+16+1 =15+17=32

Moles of CH3OH = mass/molar mass=67/32=2.09 mol

Answer 2

No. of moles
=Given mass/Actual molecular mass

By using this,
1. 1.47moles
2.67/32moles.

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