PLEASE PLEASE ANSWER THIS I NEED IT ASAP! WORTH 20 POINTS! Directions: Write the names of these compounds. If the cation is a transition
metal, use roman numerals to indicate its charge. If there is a polyatomic ion, use a periodic table to figure out its name.
1. HBr
2. CoF
3. Cu(NO3)2
4. Crci,
5. NH CI
6. FeCl,
7. FeCl2
8. LII
9. Li, Cr,0,
10. KF
11. HCI
12, Al2O3
13. Mgr.
14. Mgso
15. Zn(CIO)

Which fact represents evidence for the big bang theory?

You open a can of soda at room temperature and hear a hiss. which of the following factors has changed inside the container? a.) atmospheric pressure b.) temperature of gas c.) type of gas d.) amount of gas

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .