Question

Find the weight of oxygen in 2.495gm of cuSo4.5h2o​

Answer 1

Answer:

The molecular mass of CuSO4.5H2O is 63.5+32+64+90 = 249.5 gms

Now,

The moles = 2.495 ÷ 249.5

= 0.01 moles of cuso4.5h2o

Now,

The moles of oxygen = 9 × 0.01

= 0.09 moles

Wt of oxygen present = 0.09 × 2.495

= 0.22 gms

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