Question

a compound with the empirical formula CH2 has a molar mass of 70 g/mol. what is the molecular formula for this compound?

Answer 1

????

Answer 2

It's pentene C5H10

Answer 3

@emanuelfarias

Answer 4

thank you

Answer 5

what is the empirical formula of compound composed of 3.25% hydrogen, 19.36% carbon, and 77.39% oxygen by mass? can u help me with this one too?

Answer 6

@GTXMUQSIT

Answer 7

@emanuelfarias give 5 minutes

Answer 8

@GTXMUQSIT K i will

Answer 9

It's CH2O3 @emanuelfarias

Answer 10

@emanuelfarias do you want solution of it?

Answer 11

@GTXMUQSIT because it give me HCO and it say insert the subscripts needed that is

Answer 12

@GTXMUQSIT just the number u know

Answer 13

use the molar weights and assume there is 100g
3.25/1.008 = 3.22
19.36/12 = 1.61
77.39/16 = 4.84
now take the smallest value and divide all others by it in this case 1.61 is smallest.
1.61/1.61 = 1 therefore C=1
3.22/1.61 = 2 therefore H=2
4.84/1.61 = 3 therefore H=3
@emanuelfarias I hope now you get it

Answer 14

so then it would be H2C1O

Answer 15

nope it wrong cuz i need the subscripts of H , C and O

Answer 16

the last one I typed wrong it's not H it's O=3

Answer 17

\[CH _{2}O _{3}\]

Answer 18

CH2O3