What is the mass in grams of 7.5 x 10^15 atoms of nickel, Ni?

7.3 × 10⁻⁷ g Ni

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Atomic Structure

Reading a Periodic TableUsing Dimensional AnalysisAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Explanation:

Step 1: Define

7.5 × 10¹⁵ atoms Ni

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of Ni - 58.69 g/mol

Step 3: Convert

Set up:                              Multiply:                                                                                                          

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

7.30945 × 10⁻⁷ g Ni ≈ 7.3 × 10⁻⁷ g Ni

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