Question

If you have 100g of KMnO how many moles do you have?

Answer 1

0.9 mol KMnO

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

Step-by-step explanation:

Step 1: Define

100 g KMnO

Step 2: Identify Conversions

Molar Mass of K - 39.10 g/mol

Molar Mass of Mn - 54.94 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of KMnO - 39.10 + 54.94 + 16.00 = 110.04 g/mol

Step 3: Convert

1. Set up:
   `\displaystyle 100 \ g \ KMnO((1 \ mol \ KMnO)/(110.4 \ g \ KMnO))`
2. Divide:
   `\displaystyle 0.90876 \ mol \ KMnO`

Step 4: Check

Follow sig fig rules and round. We are given 1 sig fig.

0.90876 mol KMnO ≈ 0.9 mol KMnO