Question

Calculate no. Of moles in 49g of H2SO4

Answer 1

Given mass: 49g

Molar mass of H2SO4: 2*1+32+4*64

= 2+32+64

= 98g

No. of moles = given mass/molar mass

= 49/98

= 0.5 moles

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Answer 2

Given Mass, m = 49g

Molar Mass, M = 98

Hence, no. of moles = m/M = 49/98 = 0.5