Question

HELP?

what is the molecular formula for
empirical formula CH (script m = 78.11 g/mol)?

Answer 1

Do total mass = n(mass of CH)
Find n, then do c=n(CH)

Answer 2

so what do c and n mean?

Answer 3

Oh God I typed c and meant backspace n but did =n.

Find n, then do n(CH) is what I meant.

Answer 4

haha its ok. but what is n? like idk what it stands for

Answer 5

It's just a scalar multiple used to note a factor of the molecular formula.

Answer 6

dude dumify it for me please. so is n like the total mass?

Answer 7

n is just a number

Answer 8

number for what? (sorry if i am an idiot)

Answer 9

Just a number to tell you how many times empirical formula is the molecular formula.

Answer 10

so empirical formula is the CH? and im suppose to get to like C_ H_?

ok so can you do the steps and describe them? i learn and understand it when i see it done and described the steps.

Answer 11

Yup. Well I gave you the steps in my first reply.

Answer 12

so n= total mass/ Mass of CH?

isnt total mass and mass of CH the same?

Answer 13

Yup. The total mass given is the mass of the molecular formula.

Answer 14

Wait, what is script m in the question? I see no m

Answer 15

idk it just sayd empirical formula CH ( m = 78.11 g/mol)

Answer 16

m or script m? Either way, that mass is the total mass for the molecular formula.

Answer 17

its m. just the way the symbol translated showed as script m.

so C= 12.02 and H=1.008 so i add them together and its 13.028. what do I do from here?

Answer 18

C6H6!!! okkk so I divided 78.11/13.028 and i got 5.99 and i rounded it up to 6.

so thats how i got C6H6. thanks dude!

Answer 19

Lol I fell asleep but yea that's what you do and get. You're welcome.