Find the mass in grams of 3.00 x 1023 molecules of F2

18.9 g F₂

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

3.00 × 10²³ molecules F₂

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of F₂ (Diatomic) - 38.00 g/mol

Step 3: Convert

Set up:                              Multiply:                                                                                                            

Step 4: Check

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

18.9306 g F₂ ≈ 18.9 g F₂

D=m/v =57.9/3 = 19.3 g/cm^3