HELP ASAP, I WILL BE GIVING 15 POINTS TO WHOEVER CAN GET THIS. Part C: Calculate the number of atoms of each element that are present in the following simple binary ionic compounds. 1. Znl2 _ 11. CaO _

2. MgBr2 _ 12. KF _

3. Na3N _ 13. Li3P _

4. BaO _ 14. SrS _

5. Na4Si _ 15. ZnCI2 _

6. Zn3N2 _ 16. K2O _

7. Al2O3 _ 17. KCI _

8. KBR _ 18. Nal _

9. RuN _ 19. La2O3 _

10. HfO2 _ 20. Cs2S _

Calculate the enthalpy of the following reaction: 4 b (s) + 3 o2 (g) → 2 b2o3 (s) given the following pertinent information: (a) b2o3 (s) + 3 h2o (g) → 3 o2 (g) + b2h6 (g), δhoa = +2035 kj (b) 2 b (s) + 3 h2 (g) → b2h6 (g), δhob = +36 kj (c) h2 (g) + latex: \frac{1}{2} 1 2 o2 (g) → h2o (l), δhoc = −285 kj (d) h2o (l) → h2o (g), δhod = +44 kj

Which description best characterizes the motion of particles in a solid?

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?