Question

4)Calculate the percentage of sulphur in CuSO4.5H2O​

Answer 1

Answer:

CuSO4 5H2O molecular weight

Molar mass of CuSO4 5H2O = 249.685 g/mol

Convert grams CuSO4 5H2O to moles  or  moles CuSO4 5H2O to grams

Molecular weight calculation:

63.546 + 32.065 + 15.9994*4 + 5*(1.00794*2 + 15.9994)

Percent composition by element

Element    Atomic Mass   # of Atoms   Mass Percent

Copper             63.546                  1            25.450%

Hydrogen       1.00794                   10               4.037%

Oxygen             15.9994                    9            57.671%

Sulfur             32.065                     1           12.842%

Answer 2

Answer:

Percent composition by element

Element Symbol Mass Percent

Copper Cu 25.450%

Hydrogen H 4.037%

Oxygen O 57.671%

Sulfur S 12.842%

Explanation: