Question

How much CaCl2.6H2O and water must be weighed out to make 100 g of a solution that is 5% CaCl2 by mass?

Thanks to anyone who explains this to me

Answer 1

5% of 100 g is 5 g

find the moles of CaCl2 in 5 g

multiply the moles by 6 to find the amount of hydration H2O

find the mass of the hydration H2O , and add it to the 5 g of CaCl2
... this is the amount of CaCl2.6H2O needed

the rest of the 100 g is water

Answer 2

Thank you so much