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#1 2013-02-18 19:33:21

Stella198392
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!!!!help Me Please - Word Problem Chemistry Related!!!!

A chemist has 500ml of a salt solution that contains 2% salt in units of g/cm squared. How much water must be added to reduce the concentration to 0.5%

#2 2013-02-18 21:29:25

SORRY
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Re: !!!!help Me Please - Word Problem Chemistry Related!!!!

Its G/ CM CUBED

#3 2013-02-21 13:15:59

John E. Franklin
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Re: !!!!help Me Please - Word Problem Chemistry Related!!!!

(49/50)(500ml)(3) should work.  The reason is that if 49 parts water out of 50 make 98% water, then that's 2% salt by weight.
so therefore you want to quadruple the water to go from 2 to 1 to 1/2 of a percent salt.  So add 3 more times the 49 parts.
Am i right?


igloo myrtilles fourmis

#4 2013-02-21 18:17:02

anonimnystefy
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Re: !!!!help Me Please - Word Problem Chemistry Related!!!!

Actually, I think 1500ml must be added.


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#5 2013-02-22 16:31:54

bob bundy
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Re: !!!!help Me Please - Word Problem Chemistry Related!!!!

Hi

Mrs b agrees with 1500 & with g per cm cubed.

Bob


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