Question

please solve this question​

Answer 1

Answer:

Hey mate here is your answer

Explanation:

Atomic mass of Fe=56 and S=32,O=16

Mass of crystal=4.54kg

Percentage = Mass of the elements in 1mol of compound/ Molar mass of the compound*100

Molar mass of FeSO4.7H20 =1*56 +1*32+14*1+11*6

=56+32+14+176

=278 g/mol

Percentage of Fe = 56/278*100

= 20.14%

Percentage of S= 32/278* 100

=11.51%

Percentage of H= 14/278*100.

= 5.04%

Percentage of O= 176/278*100

= 63.31%

278kg green vitriol =56kg iron

4.54kg green vitriol =x

x= 56*4.54/278= 0.915kg

Mass of 7H20 in 278kg green vitriol = 7*18=126kg

4.54kg green vitriol=y

y= 126*4.54/278= 2.058kg

Hope its clear

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