A lab procedure calls for 0.400 M NaOH solution. What volume would you end up with if you diluted 0.100 L of 0.700 M NaOH solution to obtain the necessary NaOH solution? a. 0.0280 L
b. 0.0500 L
c. 5.21 L
d. 0.175 L

please help me ill give you brainliest​

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%

the answers are

c and c