Question

Calculate the number of moles in each sample.
69.7 g HCCl3

Answer 1

@Technodynamic

Answer 2

@CO_oLBoY

Answer 3

Do you know how to answer this?

Answer 4

\[69.7 g HCCl3 * \frac{ mol HCCl3 }{ 119.37 g HCCl3 } = 0.584 mol HCCl3\]

Answer 5

could you please explain how you set up that problem?

Answer 6

the thing is i have three more of these questions and i wanna learn how to do them

Answer 7

step 1: start w/ the grams given.
step 2: they ask how many moles, so you add every element in HCCl3

For example: Look at the periodic table. Hydrogen = 1.008 g , Carbon = 12.01 g
Cl = 35.45 g. In Cl there are 3 of them so you multiply 35.35 * 3.

How to do it: Add up all of them. Example:

H: 1.008
C: 12.01
Cl: 35.45 *3 =

Total of all of them 119.37 g/ mol

step 3:
you set it up in dimensional analysis to where grams cancels to leave only moles.

step 4:
divide

Answer 8

okay i got it. thank you very much!

Answer 9

it'll be hard at first, but you got this. i have faith! You're welcome! :)

Answer 10

thank you :)