Answer:
F i think i pretty sure F!!!!!!!!
12. B
13. B
14.D
15. A.
16.C.
17. C
18.B
19.A.
To find moles from grams would be the amount of grams which in your case is 3.4 divided by the molar mass which is just adding ip Si, O2
Answer:
77.173g
Explanation:
we have been given the number of moles contained in CH thus we can find the molar mass of CH and then calculate for the mass