What is the percent composition of water in #Na_2S • 9H_2O?#

1 Answer
May 23, 2017

Answer:

#%H_2O# #~=# #70%#

Explanation:

#%H_2O="Mass of water"/"Mass of hydrate"=(9xx18.01*g*mol^-1)/(240.18*g*mol^-1)xx100%=??%#