Chemistry, 11.03.2021 08:20, DarkKings799

How many moles of Na3N are there in 56.1 grams of Na3N? a. 4660 moles

b. 2.46x10^-24 moles

c. 4.07x10^23 moles

d. 0.676 moles

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answered: comawhite7820

D. 0.676 moles

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 TablesCompoundsMoles

Stoichiometry

Using Dimensional AnalysisExplanation:

Step 1: Define

[Given] 56.1 g Na₃N

[Solve] moles Na₃N

Step 2: Identify Conversions

[PT] Molar Mass of Na - 22.99 g/mol

[PT] Molar Mass of N - 14.01 g/mol

Molar Mass of Na₃N - 3(22.99) + 14.01 = 82.98 g/mol

Step 3: Convert

[DA] Set up: $\displaystyle 56.1 \ g \ Na_3N(\frac{1 \ mol \ Na_3N}{82.98 \ g \ Na_3N})$ [DA] Multiply/Divide [Cancel out units]: $\displaystyle 0.676067 \ mol \ Na_3N$

Step 4: Check

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

0.676067 mol Na₃N ≈ 0.676 mol Na₃N

answered: Guest

that's just how they are

explanation:

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answered: Guest

Which of the following did you identify correctly

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How many moles of Na3N are there in 56.1 grams of Na3N? a. 4660 moles

b. 2.46x10^-24 mo...