Question

7. A sample of 7.0 mL of concentrated sulfuric acid, H₂SO4 is used to make 250. mL of a 0.50 M sulfuric acid solution. What was the initial concentration of the sulfuric acid?​

Answer 1

17.86 M

Hello to find this out we use the MV=MV equation

Convert units 7.0 / 1000

Plug in and multiply
0.007*M = 0.50*0.25

Divide by 0.007 M

17.86 M