Asample of a compound contains 65.4 grams of zinc, 12.0 grams of carbon, and 48.0 grams of oxygen. what is the mole ratio of zinc to carbon
to oxygen in this compound?
(1) 1: 1: 2 (3) 1: 4: 6
(2) 1: 1: 3 (4) 5: 1: 4

2) 1:1:3

Explanation: First of all the given grams of each element are converted to moles and for this we divide the grams of an element by its atomic mass.

Atomic masses of Zn, C and O are as follows:

Zn = 65.4

C = 12.0

O = 16.0

moles of Zn =  = 1

moles of C =  = 1

moles of O = = 3

To get the mole ratio we divide the moles of each by the least one of them. The number which is least one of them is 1 and if we divide all of them by 1 then we get 1, 1 and 3 respectively.

So, the mole ratio of Zn:C:O in this compound is 1:1:3 and hence the second choice is correct.

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

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