Answer:
normal flora useful
Explanation:
protect the skin
pH= 2- log3
H2SO4 + H2O -> HSO4^(-) + H30^(+)
0.03M ___ ___
___ 0.03M 0.03M
H30^(+) : C = 0.03M
pH= - log( [H3O^(+)] ) => pH= - log {3× 10^(-2)} => pH = 2 - log3
It's A) 10 -7 M
its a 3/8 you got it your smart