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kwoods8054
15.12.2020 •
Chemistry
What is the mass of 3.02 x 1025 formula units of barium nitrate?
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Ответ:
10000 g BaNO₃
General Formulas and Concepts:
Chemistry - Atomic Structure
Reading a Periodic TableUsing Dimensional AnalysisAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Explanation:
Step 1: Define
3.02 × 10²⁵ formulas units BaNO₃
Step 2: Identify Conversions
Avogadro's Number
Molar Mass of Ba - 137.33 g/mol
Molar Mass of N - 14.01 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of BaNO₃ - 137.33 + 14.01 + 3(16.00) = 199.34 g/mol
Step 3: Convert
Step 4: Check
We are given 3 sig figs. Follow sig fig rules and round.
9996.79 g BaNO₃ ≈ 10000 g BaNO₃
Ответ: