## Fundamental practice problem L.7 part b

Jocelyn Fermin1J
Posts: 49
Joined: Tue Nov 14, 2017 3:01 am

### Fundamental practice problem L.7 part b

Hello, I am stuck on part b of practice problem L.7, please help:

The camel stores the fat tristearin, C57H110O6, in its hump. As well as being a source of energy, the fat is also a source of water because, when it is used, the reaction 2C^57 H^110 O^6 (s) 163O^2 (g)->114 CO^2(g) +110 H^2O (l) takes place. (a) What mass of water is available from 1.00 pound (454 g) of this fat? (b) What mass of oxygen is needed to oxidize this amount of tristearin?

Thank you!

NatalieSDis1A
Posts: 39
Joined: Fri Apr 06, 2018 11:05 am

### Re: Fundamental practice problem L.7 part b

I did it like this:

454 g fat (1mol fat/ 891.48 g fat) = .509 mol fat

.509 mol fat (163 mol O2/ 2 mol fat) = 41.507 mol O2

41.507 mol O2 (32 g O2/ 1 mol O2) = 1328.16g O2 = 1.33 x 103 g O2

Jocelyn Fermin1J
Posts: 49
Joined: Tue Nov 14, 2017 3:01 am

### Re: Fundamental practice problem L.7 part b

Thank you Natalie!

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