Molar Mass and Percent Composition
Flashcard
•
10th Grade
•
Practice Problem
•
Hard
Wayground Content
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14 questions
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1.
FLASHCARD QUESTION
Front
How to calculate molar mass of H2O?
Back
2+16=18
2.
FLASHCARD QUESTION
Front
What is the molar mass of CO2?
Back
44 g/mol
3.
FLASHCARD QUESTION
Front
Find the percentage composition of Mg in Mg3(PO4)2.
Back
27.48% Mg
4.
FLASHCARD QUESTION
Front
What is the molar mass of table salt (NaCl)?
Back
58.443 g/mol
5.
FLASHCARD QUESTION
Front
Which of the following is NOT needed to calculate percent composition? Mass of specific element, Molar Mass, Avogadro's Number, Division
Back
Avogadro's Number
6.
FLASHCARD QUESTION
Front
Calculate the molar mass of Ba(C2H3O2)2
Back
255.3 g/mol
7.
FLASHCARD QUESTION
Front
What is the percent by mass of sodium in NaCl?
Back
39%
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