CHEMISTRY WITH DAMMY
Authored by Dami Ogundare
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9th Grade
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50 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What mass of water is produced when 18 g of hydrogen reacts with excess oxygen?
36 g
162 g
324 g
180 g
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many grams of CO₂ are produced from the complete combustion of 44 g of propane (C₃H₈)?
132 g
88 g
44 g
176 g
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
If 32 g of methane reacts with oxygen, what mass of water is formed?
72 g
64 g
36 g
18 g
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What mass of NaCl is formed when 58.5 g of Na reacts with excess Cl₂?
117 g
58.5 g
29.25 g
146.25 g
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many grams of Fe₂O₃ are produced when 112 g of iron reacts with oxygen?
160 g
112 g
80 g
200 g
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many molecules are in 18 g of water?
6.02 × 10²³
3.01 × 10²³
1.20 × 10²⁴
9.03 × 10²³
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many atoms are in 12 g of carbon?
6.02 × 10²³
3.01 × 10²³
1.20 × 10²⁴
9.03 × 10²³
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