Question

Mrs. Rushing fills a balloon with hydrogen gas to demonstrate its ability to burn. Which combination could she use to produce the hydrogen she needs?

NaOH and oil

Zn and KOH
H2SO4 and CaCO3
Mg and HCl

Answer 1

Heyaa !!!

When Mg reacts with HCl then, Hyrogen is produced.

I think the answer is 4th one.

Mg + 2HCl ==> MgCl2 + H2

Thanks..

Answer 2

Mark him as brainlists