Chemistry 2025 Final Exam Challenge
Authored by Barry DeHaan
Science
12th Grade
NGSS covered
Used 2+ times
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100 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When 5.00 g of propane (C₃H₈) burns in excess oxygen, how many grams of CO₂ are produced? (C₃H₈ + 5O₂ → 3CO₂ + 4H₂O)
14.97 g
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many liters of hydrogen gas at STP are produced from 10.0 g of zinc reacting with excess HCl? (Zn + 2HCl → ZnCl₂ + H₂)
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the percent yield if 15.0 g of water are formed but 20.0 g were expected? (Theoretical = 20.0 g)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If 10.0 g of NaOH reacts with 10.0 g of H₂SO₄, which is the limiting reagent? (2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O)
Tags
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many molecules of CO₂ are produced when 1.00 mol of glucose reacts completely? (C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O)
3.61 × 10²⁴
Tags
NGSS.MS-PS1-5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What volume of 0.500 M HCl is required to completely react with 25.0 mL of 0.250 M NaOH? (HCl + NaOH → NaCl + H₂O)
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A 4.00 g sample of methane combusts. How much water (in grams) is produced? (CH₄ + 2O₂ → CO₂ + 2H₂O)
Tags
NGSS.HS-PS1-7
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