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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

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

Its G/ CM CUBED

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?

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igloo myrtilles fourmis

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

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

Actually, I think 1500ml must be added.

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Bob

Administrator

Registered: 2010-06-20

Posts: 10,646

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

Hi

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

Bob

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