Adaptive Practice

Some Basic Concepts of Chemistry

7 questions • Earn up to 65 XP • First attempt — go for 100%!

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Question 1 of 7 ⏱ 0:30
Easy
Avogadro's number is:
Easy
Law of Conservation of Mass was proposed by:
Easy
Molar mass of H₂O is:
Easy
How many moles are in 44g of CO₂?
Medium
The empirical formula of glucose (C₆H₁₂O₆) is:
Medium
1 mole of any gas at STP occupies:
Medium
What is the molarity of a solution containing 4g NaOH in 500 mL?

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