15.00 gm of a compound Na2SO4.xH2O contains 2.36*1023 H2O molecules.Find out the value of 'x'
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39Dunno if I'm doing correctly but here's a try :
First find how many mols of compound is equivalent to 15 grams. Let it be y mols.
y mols of compound has 2.36 * 1023 molecules of water.
1 mol of compound has 2.36/y * 1023 molecules of water.
Now 1 mol of compound has x mols of water.
x * 6.02 * 1023 molecules of water = 2.36/y * 1023
y is a known value. Find x.
1got it !! tks :)
final eqn comes out 2be a linear in 'x'
answer is 7.2 or aproximating we get 7 only as the answer