Question

Given 10.72 mole of NH3 gas, calculate the volume in L at STP

Answer 1

240.1 L NH₃

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

• STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

Stoichiometry

• Using Dimensional Analysis

Step-by-step explanation:

Step 1: Define

[Given] 10.72 mol NH₃ (g)

Step 2: Identify Conversions

[STP] 22.4 L/mol

Step 3: Convert

1. Set up:
   `\displaystyle 10.72 \ mol \ NH_3((22.4 \ L \ NH_3)/(1 \ mol \ NH_3))`
2. Multiply/Divide:
   `\displaystyle 240.128 \ L \ NH_3`

Step 4: Check

Follow sig fig rules and round. We are given 4 sig figs.

240.128 L NH₃ ≈ 240.1 L NH₃