Molecular formula: C8H6N2
Empirical formula: C4H3N
Answer:
38.7 g
Explanation:
first you find the molar mass of Nickle(II) Perchlorate
Nickle = 58.693 g/mol
Perchlorate is Chlorine and Oxygen combined
Molar mass of chlorine is 35.453 g/mol
Oxygen = 15.999 g/mol but since it has 4 oxygen atoms combined with chlorine you have to multiply 15.999 by 4 which is 63.996 add all the masses together and that gives you 158.142. Since you have moles you multiply the moles by the molar mass which looks like this. 0.245 * 158.142 which equals 38.74479 but with sign figs it is 38.7g as your final answer. Ask me if you are confused about something.
Answer:
i think 2 ,1, 2 i may be wrong sorry if i am
Aerial fireworks are usually manufactured as a shell that is made up of four parts. The container consists of pasted paper. The fuse allows the shell to reach the desired altitude before exploding. A bursting charge made of black powder (like a firecracker) is at the center of the shell.
A strong acid- strong base titration is performed using a phenolphthalein indicator. Phenolphtalein is chosen because it changes color in a pH range between 8.3 – 10.
