[kiki2928]

A 1.50-g sample of nitrous oxide contains 2.05xE22 N2O. How many nitrogen atoms are in the sample? How many nitrogen atoms are in 1.00-g of nitrous oxide?

I have attempted this problem in many ways and they never equal the answer that is provided in the back of the book. I have tried multiplying, dividing, even adding and none have worked. There is no real example in my text book that tells on how to do such a problem.
Thanks

[Dan]

How many nitrogens are in one molecule of N₂O?

How many nitrogens are in six molecules of N₂O?

So, how many nitrogens are in 2.05 x 10²² molecules of N₂O?

If I take three apples and remove one how many do I have? Two, because I have removed one third of the apples, and have two thirds of three left, right?

You know how many N atoms are in 1.5 of nitrous oxide, so if you take away 0.5 g, to leave you with 1 g of nitrous oxide, you have removed one third of the nitrous oxide (and with that one third of the nitrogen), so how many atoms do you have left?

[enahs]

A 1.50-g sample of nitrous oxide contains 2.05xE22 N2O. How many nitrogen atoms are in the sample?

You already have how many molecules of N₂O you have. How many Nitrogen atoms are in one molecules of N₂O? How many in 2.052 x 10²²?


Same for a gram.


*edit* For some reason it did not show Dans response until I replied..?