The percentage of water of crystallization in ZnSO4....
The percentage of water of crystallization in ZnSO4.7H2O is?
[Zn = 65, S = 32, O = 16, H = 1]
33%
44%
55%
87%
Correct answer is B
molar mass of water [7H2O] = 7[ 2 * 1 + 16] → 7 * 18 = 126g/mol
molar mass of ZnSO4.7H2O = [65 * 1] + [32 * 1] + [16 * 4] + 7[ 2 * 1 + 16]
→ 65 + 32 + 64 + 126 = 287g/mol
percentage of water of crystallization = massofwaterofcrystallizationmassofhydratedcompound∗100
→ 126287∗100 = 43.9
≈ 44%
What is the atomic number of Nitrogen? ...
Which of the following metals is passive to concentrated trioxonitrate (V) acid? ...
Which of the following terms indicates the number of bonds that can be formed by an atom? ...
Consider the following equilibrium reaction: 2AB2(g)+B2(g)→2AB3(g). \...
The impurities formed during the laboratory preparation of chlorine gas are removed by ...
Group VIl elements in their combined states are called? ...
Which of the following electron configurations represents that of an atom in its ground state? ...