Question

Find the mass (in grams) of 1.5 moles of BaSO4​

Answer 1

350 g BaSO₄

General Formulas and Concepts:

Chemistry - Stoichiometry

• Reading a Periodic Table
• Using Dimensional Analysis

Step-by-step explanation:

Step 1: Define

1.5 mol BaSO₄

Step 2: Identify Conversions

Molar Mass of Ba - 137.33 g/mol

Molar Mass of S - 32.07 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of BaSO₄ - 137.33 + 32.07 + 4(16.00) = 233.4 g/mol

Step 3: Convert

`1.5 \ mol \ BaSO_4((233.4 \ g \ BaSO_4)/(1 \ mol \ BaSO_4) )` = 350.1 g BaSO₄

Step 4: Check

We are given 2 sig figs. Follow sig fig rules and round.

350.1 g BaSO₄ ≈ 350 g BaSO₄