Question

Given: 4.5 mL of 0.05 M magnesium sulfate. How many moles of magnesium sulfate do we have?​

Answer 1

Hey there!:

Volume in liters of solution :

4.5 mL / 1000 => 0.0045

Molarity of solution = 0.05 M

Therefore The quantity in moles of magnesium sulfate is :

n = M * V

n = 0.0045 * 0.05

n = 0.000225 moles

Hope that helps!