The mass(amount) of kilogram of Zn are in 3.82kg of Zns is 2.557kg
The amount of the Zn in Zns is calculated by mass ratio. the formula for Mass ratio = Mass of substance/ mass of the compound.
mass of Zn(1.70g)/(mass of Zns 2.54g) = 0.669g (mass ratio) and the amount of Zn in 3.82 kg of Zns = mass ratio X mass of compound = 0.669 X 3.82 kg =2.557kg.
the complete question is :
inc Sulfide (ZnS) occurs in the zincblende crystal structure
(a) If 2.54g of ZnS contains 1.70g of Zn, what is the mass ratio of zinc to zinc sulfide?
(b) How many kilograms of Zn are in 3.82kg of ZnS?
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