Molecular Formula - Gen Chem Question

[Umbrae]

Hi,

Can someone please explain to me how they arrived to 5 and 4 (orange arrows) from (1.25 and 1).

Thank you in advance.

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[KyoPhan]

They worked with 7.81 and 6.25.

1) He looked and saw that 6.25 was the lowest value.
2) He took the lowest value(6.25) to divide by.
C 7.81/6.26 =1.25 (Aprox)
H 6.26/6.26 = 1

 

[rpatel8]

I think the question was about how to get to 5 and 4 from 1.25 and 1. I am not sure though

 

[KyoPhan]

I think the question was about how to get to 5 and 4 from 1.25 and 1. I am not sure though

Whoops. My mistake. They multiplied both those values by 4 in order to get rid of the decimal.

 

[wired202808]

Hi,

Can someone please explain to me how they arrived to 5 and 4 (orange arrows) from (1.25 and 1).

Thank you in advance.

the easiest way to solve this problem is to multiple .93 x 128 = you get 119 which is almost 120; then you divide 120 by 12 = 10 Carbons.

Thats all! dont even worry about anything else. this is simply a math problem.

 

[Umbrae]

I think the question was about how to get to 5 and 4 from 1.25 and 1. I am not sure though

Right, that's what I meant. Thanks.

Whoops. My mistake. They multiplied both those values by 4 in order to get rid of the decimal.

Aaaaah, I see. Thank you very much for your wonderful explanation. I got it now.

*EDIT*

the easiest way to solve this problem is to multiple .93 x 128 = you get 119 which is almost 120; then you divide 120 by 12 = 10 Carbons.

Thats all! dont even worry about anything else. this is simply a math problem.

You, dear sir, are a savior and a knight among us mortals. I thank thee.