What volume of 10,0 M H2SO4 is required to prepare 4.0 L of 0.50 M H2SO4? A) 0.20 L
B) 0.40 L
C) 0.50 L
D) 1.0L
E) 4.0L

A)  0.20 L

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

According to the neutralization law,

where,

= molarity of stock solution = 10.0 M

= volume of stock   solution = ?

= molarity of dilute  solution = 0.50 M

= volume of dilute  solution = 4.0 L

Therefore, the volume of 10.0 M solution needed to prepare 4.0 L of 0.50 M is 0.20 L

it's c. elements are placed in rows based on how may valencies electrons have.