Question

How many moles of F are in 8.25 grams of F?

Answer 1

0.434 mol F

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 Tables
• Moles

Stoichiometry

• Using Dimensional Analysis

Step-by-step explanation:

Step 1: Define

[Given] 8.25 g F

[Solve] moles F

Step 2: Identify Conversions

[PT] Molar Mass of F - 19.00 g/mol

Step 3: Convert

1. [DA] Set up:
   `\displaystyle 8.25 \ g \ F((1 \ mol \ F)/(19.00 \ g \ F))`
2. [DA] Multiply [Cancel out units]:
   `\displaystyle 0.434211 \ mol \ F`

Step 4: Check

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

0.434211 mol F ≈ 0.434 mol F