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evilxshadow 08-26-2012 06:11 PM

Chemistry Help
 
The ratio of A to B by mass in A2B3 is 0.4297. The ratio of A to C by mass in AC is 5.712. Find the ratio of B to C by mass in B2C.


please need help

iFarted 08-26-2012 06:34 PM

I suck at this. So, I will help.

a/c =5.712

c=5.712a

2c/3b=(.4297/5.712)

3b/2c = (5.712/.4297)

2b/c = (4/3) * (5.712/.4297)

ratio = 17.72?

If I'm wrong, Cepheid will be our savior.

evilxshadow 08-26-2012 07:30 PM

Quote:

Originally Posted by iFarted (Post 1762258)
I suck at this. So, I will help.

a/c =5.712

c=5.712a

2c/3b=(.4297/5.712)

3b/2c = (5.712/.4297)

2b/c = (4/3) * (5.712/.4297)

ratio = 17.72?

If I'm wrong, Cepheid will be our savior.

how did ur c=5.712a suddenly become 2c/3b?

iFarted 08-26-2012 08:36 PM

I substituted c into 2a/3b = .4297

evilxshadow 08-26-2012 09:17 PM

ah i see, thx for ur help

Nebula 08-27-2012 05:00 PM

Quote:

Originally Posted by iFarted (Post 1762258)
I suck at this. So, I will help.

a/c =5.712

c=5.712a

2c/3b=(.4297/5.712)

3b/2c = (5.712/.4297)

2b/c = (4/3) * (5.712/.4297)

ratio = 17.72?

If I'm wrong, Cepheid will be our savior.

Looks fine to me :D
And savior? I doubt it, there was no need for me.:py12:


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