An hydrate of #BaCl_2# contains #0.750*mg# of the salt, and #0.0965*g# of water, how many waters in the formula #BaCl_2*n(H_2O)#?

1 Answer
Mar 21, 2017

Answer:

#"Molar quantity"="Mass of substance"/"Molar mass of substance"#

Explanation:

#"Moles of barium chloride"=(0.00075*g)/(208.23*g*mol^-1)=??*mol#

#"Moles of water"=(0.0965*g)/(18.02*g*mol^-1)=7.203xx10^-6*mol#

And you can tell us the molar ratio..........