Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

• Index
•  » Help Me !
•  » !!!!help Me Please - Word Problem Chemistry Related!!!!

## #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%

SORRY
Guest

Its G/ CM CUBED

## #3 2013-02-21 13:15:59

John E. Franklin
Star Member

Offline

### 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
Real Member

Offline

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

Actually, I think 1500ml must be added.

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

## #5 2013-02-22 16:31:54

bob bundy
Moderator

Offline

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

Hi

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

Bob

You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
• Index
•  » Help Me !
•  » !!!!help Me Please - Word Problem Chemistry Related!!!!