Respuesta :

Space

Answer:

139 g Cu

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
  • Moles

Stoichiometry

  • Using Dimensional Analysis

Explanation:

Step 1: Define

[Given] 2.18 mol Cu

[Solve] grams Cu

Step 2: Identify Conversion

[PT] Molar Mass of Cu - 63.55 g/mol

Step 3: Convert

  1. [DA] Set up:                                                                                                     [tex]\displaystyle 2.18 \ mol \ Cu(\frac{63.55 \ g \ Cu}{1 \ mol \ Cu})[/tex]
  2. [DA] Multiply [Cancel out units]:                                                                     [tex]\displaystyle 138.539 \ mol \ Cu[/tex]

Step 4: Check

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

138.539 g Cu ≈ 139 g Cu

Otras preguntas