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#1 2013-02-18 19:33:21
- 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%
#3 2013-02-21 13:15:59
- John E. Franklin
- Star Member
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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?
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#4 2013-02-21 18:17:02
- anonimnystefy
- Real Member
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Re: !!!!help Me Please - Word Problem Chemistry Related!!!!
Actually, I think 1500ml must be added.
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