Question

What is the amount in moles 3.40 g Zn

Answer 1

Answer:

0.0520 mol Zn

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

3.40 g Zn

Step 2: Identify Conversions

Molar Mass of Zn - 65.39 g/mol

Step 3: Convert

1. Set up:                    $\displaystyle 3.40 \ g \ Zn(\frac{1 \ mol \ Zn}{65.39 \ g \ Zn})$
2. Divide:                    $\displaystyle 0.051996 \ mol \ Zn$

Step 4: Check

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

0.051996 mol Zn ≈ 0.0520 mol Zn