Question

1. How many moles are in 230. Grams of SO2?

2. How many molecules are in 30.5 moles of lithium nitrate?

Answer 1

3.59 mol

1.836 x 10 ²⁵ molecules

Further explanation

Given

230 g SO2

30.5 moles LiNO3

Required

moles and molecules

Solution

mol = mass : molar mass

1 mol = 6.02 x 10²³ particles(molecules, atoms, ions)

1. 230 g x 1 mol/64,066 g =3.59 mol

2. 30.5 moles x 6.02 x 10 ²³ molecules / 1 mol = 1.836 x 10 ²⁵ molecules