Question 1
What is the relative molecular mass of calcium carbonate, CaCO3? [Ar: Ca=40, C=12, O=16]
Correct Answer:
100
Question 2
How many moles of molecules are present in 18.0 g of water, H2O? [Mr(H2O)=18.0]
Correct Answer:
1.00 mol
Question 3
How many atoms are present in 0.25 mol of helium gas? [L = 6.02 × 10^23 mol^-1]
Correct Answer:
1.505 × 10^23
Question 4
A compound contains 40.0% C, 6.7% H and 53.3% O by mass. What is its empirical formula? [Ar: C=12, H=1, O=16]
Correct Answer:
CH2O
Question 5
The empirical formula of a hydrocarbon is CH2 and its relative molecular mass is 56. What is its molecular formula? [Ar: C=12, H=1]
Correct Answer:
C4H8
Question 1
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About this Exam

Prepare with the STPM Chemistry 962 Practice Questions - Sijil Tinggi Persekolahan Malaysia (STPM) - Chemistry Kimia (962) Exam practice quiz. This question bank includes 100 questions covering reaction, rate, mass, naoh, and temperature. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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STPM Chemistry 962 Practice Questions - Sijil Tinggi Persekolahan Malaysia (STPM) - Chemistry Kimia (962) Exam

This practice set contains 100 questions from the matching question bank and focuses on reaction, rate, mass, naoh, and temperature. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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