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

1 Answer
anor277
May 23, 2017

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

Explanation:

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

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