What is way to find the numbers of liters in 8 kilometers? (A.) Add 5,000 and 3, because you are adding 3 kiloliters to 5,000 liters. (B.) Multiply 8 by 3,000, because each kiloliter has 3,000 liters. (C.) Add 5,000 and 1,000, because the pattern in the liters column is to add 1,000. (D.)Multiply 8 by 1,000, because each kiloliter has 1,000 liters.

Ido not understand. 

2licl + 3o2 i yook the test and it was correct.

50? i have no !

Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m