
Chemistry Quiz
Authored by Terence Laughlin
Chemistry
9th Grade

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35 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the empirical formula of a compound that is 40% sulfur and 60% oxygen by weight?
SO
S6O4
SO2
SO3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the number of moles of beryllium in 36 g of Be?
4.0 mol
320 mol
45.0 mol
0.25 mol
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the percent composition of chromium in BaCrO4?
4.87%
20.5%
25.2%
9.47%
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the number of moles in 432 g Ba(NO3)2?
3.66 mol
0.605 mol
1.65 mol
0.237 mol
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many atoms are in 3.5 moles of arsenic atoms?
2.1 x 10^24 atoms
1.7 x 10^23 atoms
5.8 x 10^40 atoms
7.5 x 10^4 atoms
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many hydrogen atoms are in 5 molecules of isopropyl alcohol, C3H7O?
5 x (6.02 x 10^23)
5
35 x (6.02 x 10^23)
35
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molar mass of AuCl3?
96 g
130 g
232.5 g
303.6 g
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