Chemistry P6 2020-21 Notebook Home Insert Draw View U abc : 53 Asiyles ? Q. 7. Find the number of moles in 370 g of (NH),SO? 3.132.1 mol b. 32.4 mol c. 3.24 mol d. 2.80 mol 8. What is the volume in liters of 3.75 mol of Hz gas at standard conditions? a 3.75 L b. 32.0 L c. 84.0 L d. 120 L 9. What is the percentage of Calcium in CaSO4? a. 12.7% b. 25.5% c. 29.4% d. 56.7% 10. How are a liquid and a gas different? a. Gas flows, but liquid does not b. Liquid has a permanent shape, but gas does not c. Neither gas nor liquid flow d. Neither gas nor liquid have a permanent shape 11. On the Periodic Table, this number gives you the number of Protons: a. The Atomic Number b. The Mass Number c. The number of Neutrons d. 6.02x10 12. If two atoms are the same element but have different numbers of neutrons they are known as: a. Isotopes b. Isomers c. Radioactive d. Ions Bruno TOTTE