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## #1 2013-02-17 20:33:21

Stella198392
Guest

### !!!!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%

SORRY
Guest

Its G/ CM CUBED

## #3 2013-02-20 14:15:59

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,588

### 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

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## #4 2013-02-20 19:17:02

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,037

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

Actually, I think 1500ml must be added.

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## #5 2013-02-21 17:31:54

bob bundy
Registered: 2010-06-20
Posts: 8,354

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

Hi

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

Bob

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You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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