Question

what is the ratio of the number molecules in 14g CO and 28g N2​

Answer 1

Answer:

1:2

Step-by-step explanation:

CO, being Carbon Monoxide, has a molecular mass of 12+16 = 28 u, 1 mole of CO would consist of 28 grams of CO

N2, being the nitrogen molecule, also has a 1molecular mass of 14 + 14 = 28 u, so 1 mole of N2 would have 28g of N2

In 14g of CO, there consists of 14/28 moles of CO, that is, 0.5 moles of CO

In 28 grams of N2, there would be 1 mole of N2

So the ratio of the number of moles of the two substances is 0.5/1 = 0.5

The ratio of the number of moles is exactly the same of the ratio of the number of molecules in the two compounds.

So your answer would be 1:2.

Hope this helps!