Question

What is mass in grams of 2.30 moles of Aluminum?

Answer 1

Answer:

62.1 g Al

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

Chemistry

Atomic Structure

• Reading a Periodic Table

Stoichiometry

• Using Dimensional Analysis

Explanation:

Step 1: Define

2.30 mol Al

Step 2: Identify Conversions

[PT] Molar Mass of Al - 26.98 g/mol

Step 3: Convert

1. Set up:                              $\displaystyle 2.30 \ mol \ Al(\frac{26.98 \ g \ Al}{1 \ mol \ Al})$
2. Multiply/Divide:                $\displaystyle 62.054 \ g \ Al$

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

62.054 g Al ≈ 62.1 g Al