Question

how many molecules of liquid ethanol are in 10.00 ml of ethanol, given its density is 0.7918 g/mL

Answer 1

do you have the density formula?

Answer 2

D = M/V

Answer 3

so... 0.7918=M/10.00 right?

Answer 4

Yea that's correct

Answer 5

then what is the mass in grams?

Answer 6

.07918 g

Answer 7

?

Answer 8

0.7918x10.00=7.918

Answer 9

Wait why did you multiply?

Answer 10

reverse pamdas... to get the M alone to solve for it.

Answer 11

Oh ok i see

Answer 12

so what is the compound for ethanol?

Answer 13

I don't understand..sorry

Answer 14

what is the equation for it? the atoms.

Answer 15

Do you mean how many grams per mole of ethanol?

Answer 16

CH(sub 3)OH

Answer 17

wait in the question i meant methanol sorry

Answer 18

okay what is the formula mass for it? the sum of masses of the atoms?

Answer 19

12.10+3(1.01)+16+1.01=?

Answer 20

thats a 12.01

Answer 21

12.01 + 1.01*3 + 16 + 1.01

Answer 22

Oh ok

Answer 23

whats the answer?

Answer 24

32.05

Answer 25

conversion chart.

Answer 26

got it?

Answer 27

yea thankyou

Answer 28

yeah anytime.

Answer 29

1.48 * 10^23