Multiple Choice
What is the molar mass of H2CrO4?
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- 1. Intro to General Chemistry3h 48m
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2. Atoms & Elements
Calculating Molar Mass
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
How many total atoms of hydrogen are present in one formula unit of the compound 2H2O2?
A
4
B
6
C
2
D
8
Verified step by step guidance1
Identify the chemical formula given: 2H2O2 means there are 2 formula units of H2O2.
Determine the number of hydrogen atoms in one formula unit of H2O2. Since the subscript for hydrogen is 2, there are 2 hydrogen atoms per H2O2 molecule.
Multiply the number of hydrogen atoms in one formula unit by the number of formula units: 2 hydrogen atoms × 2 formula units.
Calculate the total number of hydrogen atoms by performing the multiplication (do not provide the final number here, just the operation).
Conclude that the total hydrogen atoms in 2H2O2 is the product from the previous step.
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