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: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them