# Sample problems noble gases

1. Question: How many moles are in 20 grams of Neon (Ne)? Answer: There are approximately 0.74 moles in 20 grams of Neon.

2. Question: What is the mass of 2 moles of Argon (Ar)? Answer: The mass of 2 moles of Argon is approximately 79.90 g.
3. Question: How many atoms are in 1 mole of Helium (He)? Answer: There are approximately 6.022 x 10²³ atoms in 1 mole of Helium.
4. Question: What is the mass of 1 mole of Krypton (Kr)? Answer: The mass of 1 mole of Krypton is approximately 83.80 g.
5. Question: How many moles of Xenon (Xe) are in 131.3 grams of Xenon? Answer: There is 1 mole of Xenon in 131.3 grams.
6. Question: How many grams are in 0.5 moles of Helium (He)? Answer: There are approximately 2 g in 0.5 moles of Helium.
7. Question: What is the volume occupied by 1 mole of any noble gas at STP? Answer: The volume occupied by 1 mole of any gas at STP is 22.4 liters.
8. Question: How many moles are in 100 grams of Argon (Ar)? Answer: There are approximately 2.49 moles in 100 grams of Argon.
9. Question: What is the mass of 3 moles of Neon (Ne)? Answer: The mass of 3 moles of Neon is approximately 60.2 g.
10. Question: How many atoms are in 1 mole of Xenon (Xe)? Answer: There are approximately 6.022 x 10²³ atoms in 1 mole of Xenon.
11. Question: What is the mass of 2.5 moles of Krypton (Kr)? Answer: The mass of 2.5 moles of Krypton is approximately 209.5 g.
12. Question: How many grams are in 3 moles of Argon (Ar)? Answer: There are approximately 119.85 g in 3 moles of Argon.
13. Question: How many moles are in 250 grams of Xenon (Xe)? Answer: There are approximately 1.90 moles in 250 grams of Xenon.
14. Question: What is the volume of 2 moles of Helium (He) at STP? Answer: The volume of 2 moles of Helium at STP is 44.8 liters.
15. Question: How many atoms are in 2 moles of Neon (Ne)? Answer: There are approximately 1.204 x 10²⁴ atoms in 2 moles of Neon.
16. Question: What is the volume occupied by 0.5 moles of Argon (Ar) at STP? Answer: The volume occupied by 0.5 moles of Argon at STP is 11.2 liters.
17. Question: How many grams are in 5 moles of Krypton (Kr)? Answer: There are approximately 419 g in 5 moles of Krypton.
18. Question: What is the mass of 4 moles of Xenon (Xe)? Answer: The mass of 4 moles of Xenon is approximately 525.2 g.
19. Question: How many atoms are in 3 moles of Argon (Ar)? Answer: There are approximately 1.807 x 10²⁴ atoms in 3 moles of Argon.
20. Question: What is the volume occupied by 3 moles of Neon (Ne) at STP? Answer: The volume occupied by 3 moles of Neon at STP is 67.2 liters.