Question

Help?

Answer 1

ok for this one, since these are compounds, not just elements so you need to calculate the MM for the whole compound

Answer 2

lets take ammonium chloride (NH_4Cl) for example:

Answer 3

so basically what you do is get the MM for each element alone then add them all up.
so N is 14 x 1(since there is one of it
H is 1 X 4
and Cl is 35.45 x 1

Answer 4

so add them up you get 53.45 so that is the molar mass for the compound

Answer 5

So lets take Sucrose
C is 12.01 x 12
H is 1.01 x 22
and O is 16.00 x 11
Add them and you get.
342.34?

Answer 6

yup!!

Answer 7

and from there you find the moles and grams the same way like the other question

Answer 8

@adamconner Can you help me with the last row?

Answer 9

you do the same thing as the last chart. You multiply the number of moles by avogadros number (6.022x10^23)

Answer 10

Well is this right for the first one?
\[1.29 \times 10^{22}\]
And then for the next
\[2.17 \times 10^{21}\]

Answer 11

yes thats correct!

Answer 12

Okay thanks. I already wrote them all down just wanted to know they were correct before turning it in.

Answer 13

yea they are right! if u have anything else let me know!

Answer 14

This is actually the last thing I had for the entire semester!

Answer 15

ooh cool
lucky you

Answer 16

5. Which of the compounds contains the most total atoms?