Question

the % H in HCI=?
a.2.8 b.3.77 c.5 d.97.2

Answer 1

Mass of one hydrogen atom: 1.01 amu
Mass of one chlorine atom: 35.45 amu

Mass percent Cl in HCl = 35.45 / (1.01 + 35.45) = 35.45 / 36.46 = 97.2%

Answer 2

So to get %H subtract %CL from 100
so what is 100-97.2ish

Answer 3

2.8 thanks

Answer 4

Yep.