Question

Determine the mass in grams of 4.54 ✕ 1024 molecules of CO2.
@vocaloid

Answer 1

10^24

Answer 2

Divide by Avogadro's constant to convert it into moles and then multiply by the molar mass of CO2 which is 44.01 to convert it into grams

Answer 3

You should keep this flow chart in your mind when you're converting between molecules/atoms, moles, and grams

Answer 4

4.54 * 10^24 molecules

Avogadro's number is 6.023*10^23

First divide to get the number of moles:

(4.54*10^24) / ((6.023*10^23) = ???

and then multiply by the molar mass which is 44.01 to convert it into grams of CO2

Answer 5

7.54

Answer 6

I haven't done any calculations yet but you should include units. Is that 7.54 moles? Or 7.54 grams?

Answer 7

Moles I did the equation you had up

Answer 8

I wouldn't round just yet so that way you can get the most accurate answer

But the next and final step is to multiply by 44.01 grams / 1 mole to convert from moles to grams

Answer 9

so take what I have in my calculator and multiply the grams/1 (or the number I got for moles)?

Answer 10

what you have in your calculator, you multiply it by 44.01

Answer 11

3.17373 with just multiplying

Answer 12

Check again

7.5377 * 44.01 = ?

Answer 13

331.73

Answer 14

The molar mass tells us how many grams of that compound is in 1 mole

So we multiply it by the number of moles to find out how many grams are in that many moles

Answer 15

thank you