
formulamasspractice
Quiz
•
Chemistry
•
10th Grade
•
Hard
Standards-aligned
Sharon Padilla
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14 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
How many moles are in 16.94g of water?
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the molecular formula if the empirical formula is CH2O and the molecular molar mass is 180.18?
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Whats the empirical formula of a molecule containing 18.7% of Lithium, 16.3% of Carbon and 65.0% of oxygen?
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
How many molecules are in 9.44 moles of aluminum chloride?
Tags
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Find the percent composition of hydrogen in ammonium sulfide.
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the mass percentage of carbon in carbon dioxide?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Assign oxidation number to P in the compound
PBr3
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