The mass of a crucible and a hydrated salt was found to be 21.447 g. The mass of the crucible and the anhydrous salt was 20.070 g. The mass of the crucible was 17.985 g. How do you calculate the mass of the hydrate heated?

1 Answer
Nov 9, 2016



The question asked you to determine the mass of the hydrate, even though you could calculate the mass of anhydrous salt.

And this is simply the intial mass of the hydrate and crucible, LESS the mass of the crucible, that is the tare or container weight.

So how many water molecules were lost?