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Kalani569

Answer:

Mass = 14.7 g

Explanation:

Given data:

Mass in g =?

Moles of K = 0.375 mol

Solution:

The Molar mass of potassium is 39.1 g/mol.

Formula

Number of moles = mass/molar mass

Mass = Number of moles × molar mass

Mass = 0.375 mol × 39.1 g/mol

Mass = 14.7 g

Space

Answer:

14.7 g K

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
  • Using Dimensional Analysis

Explanation:

Step 1: Define

0.375 mol K

Step 2: Identify Conversions

Molar Mass of K - 39.10 g/mol

Step 3: Convert

  1. Set up:                              [tex]\displaystyle 0.375 \ mol \ K(\frac{39.10 \ g \ K}{1 \ mol \ K})[/tex]
  2. Multiply:                            [tex]\displaystyle 14.6625 \ g \ K[/tex]

Step 4: Check

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

14.6625 g K ≈ 14.7 g K

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