Only Smart Students Can Solve These 50 Easy Mole Concept Questions!”

🧪 Mole Concept Quiz (Easy Level)

1. What is a mole in chemistry?
   Answer: Amount of substance containing 6.022×1023 particles

2. What is the value of Avogadro’s number?
   Answer: 6.022×1023

3. One mole of oxygen molecules contains how many molecules?
   Answer: 6.022×1023

4. What is the molar mass of hydrogen (H₂)?
   Answer: 2 g/mol

5. What is the molar mass of oxygen (O₂)?
   Answer: 32 g/mol

6. How many moles are in 22.4 L of gas at STP?
   Answer: 1 mole

7. What is STP?
   Answer: Standard Temperature and Pressure

8. What is the molar mass of carbon (C)?
   Answer: 12 g/mol

9. Number of atoms in 1 mole of carbon?
   Answer: 6.022×1023

10. How many moles are in 44 g of CO₂?
    Answer: 1 mole

11. What is the molar mass of water (H₂O)?
    Answer: 18 g/mol

12. How many molecules in 1 mole of water?
    Answer: 6.022×1023

13. How many atoms in 1 mole of H₂?
    Answer: 1.204×1024

14. What is the molar mass of NaCl?
    Answer: 58.5 g/mol

15. How many moles in 58.5 g NaCl?
    Answer: 1 mole

16. What is the formula to find moles?
    Answer: Moles = Mass / Molar mass

17. What is the molar mass of nitrogen (N₂)?
    Answer: 28 g/mol

18. How many moles are in 28 g of N₂?
    Answer: 1 mole

19. How many particles in 2 moles?
    Answer: 1.204×1024

20. What is the unit of molar mass?
    Answer: g/mol

21. How many moles in 36 g of water?
    Answer: 2 moles

22. How many grams in 2 moles of CO₂?
    Answer: 88 g

23. What is the molar mass of CH₄?
    Answer: 16 g/mol

24. How many moles in 16 g CH₄?
    Answer: 1 mole

25. What is the molar mass of NH₃?
    Answer: 17 g/mol

26. How many moles in 34 g NH₃?
    Answer: 2 moles

27. How many atoms in 1 mole of helium?
    Answer: 6.022×1023

28. What is the molar mass of CaCO₃?
    Answer: 100 g/mol

29. How many moles in 100 g CaCO₃?
    Answer: 1 mole

30. What is Avogadro’s number used for?
    Answer: Counting particles

31. How many molecules in 0.5 mole?
    Answer: 3.011×1023

32. What is the molar mass of O₃?
    Answer: 48 g/mol

33. How many moles in 96 g O₃?
    Answer: 2 moles

34. How many grams in 1 mole of HCl?
    Answer: 36.5 g

35. What is the molar mass of CO?
    Answer: 28 g/mol

36. How many moles in 14 g CO?
    Answer: 0.5 mole

37. What is the molar mass of KCl?
    Answer: 74.5 g/mol

38. How many moles in 74.5 g KCl?
    Answer: 1 mole

39. What is the molar mass of MgO?
    Answer: 40 g/mol

40. How many moles in 80 g MgO?
    Answer: 2 moles

41. How many molecules in 3 moles?
    Answer: 1.806×1024

42. What is the molar mass of H₂SO₄?
    Answer: 98 g/mol

43. How many moles in 196 g H₂SO₄?
    Answer: 2 moles

44. What is the molar mass of NaOH?
    Answer: 40 g/mol

45. How many moles in 80 g NaOH?
    Answer: 2 moles

46. How many atoms in 2 moles of helium?
    Answer: 1.204×1024

47. What is the molar mass of glucose (C₆H₁₂O₆)?
    Answer: 180 g/mol

48. How many moles in 180 g glucose?
    Answer: 1 mole

49. How many molecules in 2 moles of water?
    Answer: 1.204×1024

50. What is the mass of 1 mole of any substance called?
    Answer: Molar mass