Question

Cr .00454 Mole to mass

Answer 1

\(n=\dfrac{m}{M}\)

n=moles; m=mass; M=molar mass

Answer 2

Mass 64 Fe = how many moles

Answer 3

?

Answer 4

i dont understand what you're asking

Answer 5

I have a given mass of(Fe) 64 and I need to find how many moles

Answer 6

use the same equation i posted, solve for n (moles) this time.

Answer 7

as in 55.85/64?

Answer 8

the other way around

Answer 9

i tried that I didn't get it right

Answer 10

\(n=\dfrac{64g}{55.85g/mol}\)

Answer 11

than I rounded it to 1.15

Answer 12

do they want sig figs?

they're only giving you 2 sig figs in the question

Answer 13

it just says Express your answers numerically

Answer 14

if 1.15 didn't work, try 1.2

Answer 15

it didn't work but maybe Iam getting the 2nd one wrong, mass of 1.72 Hg=200.59 same problem i did 1.72/200.59

Answer 16

are you sure 1.72 is in grams?

Answer 17

no kg

Answer 18

you need to use grams because the molar mass in is "g/mol"

Answer 19

how do I do that?

Answer 20

1 kg = 1000 g

Answer 21

so 8.6? but I still got it wrong

Answer 22

?

Answer 23

anyone able to help