Question

How many molecules are in 4.75 moles H2SO4?

Answer 1

1 mole = 6.023x10^23 molecules

Answer 2

I know that, but I'm confused on how to convert it.

Answer 3

if you have 4.75 dozens of doughnuts, you have 4.75 x 12=
if you have 4.75 moles of molecules, you have 4.75 x avogadros number

Answer 4

also do you know why it ends up as like 10^4? example: 4.84 * 10^4. Why does the power of 10 change?

Answer 5

it shouldn't go down

Answer 6

you should get 2.86x10^24

Answer 7

but 4.75*6.022= 28

Answer 8

it's not 6.023, it's 6.023x10^23 as in 602300000000000000000000

Answer 9

can you show me what variables to multiply because I'm still very confused.

Answer 10

you have 4.75 moles right?

so multiply 4.75 x (6.023x10^23)=

Answer 11

don't we have to find the MM of H2SO4 and multiply it by that first?

Answer 12

molar mass

Answer 13

no they're asking you for the amount of molecules not grams

Answer 14

okay, but does (4.75 x 6.023) multiply with 10^23?

Answer 15

do you know what scientific notation is?

avogadros number is in scientific notation

6.023x10^23, is one number not 2.

Answer 16

wouldn't 6.023 x 10^23 be some outrageous number

Answer 17

WAIT

Answer 18

I think I understand

Answer 19

yes it is, because molecules are really, like really small

Answer 20

say we multiply 4.75 x 602300000000000000000000 (something like that) how does it end up with 10^24?

Answer 21

lol pretend it wasn't 10^23

pretend it was 6023 (six thousand and twenty three)

multiply it by 4.75

4.75*6023=28609.25

you went from 6.023x10^3 to 2.8x^10^4

one order of magnitude change

same thing with the problem you're doing

Answer 22

oh alright that makes sense, but if we want to solve this equation again do we have to always multiply by 6023000000000000000000?

Answer 23

isn't there a simpler way?

Answer 24

if you're finding the number of atoms, molecules or ions, you have to use avogadros number

Answer 25

it's simpler if you use scientific notation 6.023*10^23

Answer 26

I mean you have to times by 6.023 x 10^23, but how do you use the scientific notation?

Answer 27

that is scientific notation 6.023*10^23, in most calculators you can input the number like that

Answer 28

Alright, thank you for your help. Will it be alright if I happen to message you again if I have any questions?

Answer 29

yeah, for sure. i have a crappy internet connection right now, so it might take me a bit, but il reply

Answer 30

alright thanks again for your help!

Answer 31

no problem !