chemistry
posted by jo .
Isotonic saline is a 0.9%(g/100ml) solution of salty water. You are asked to make up 2 Litres of isotonic saline. How much salt should you weigh out?
Is this right?
0.9g/100ml * 2000ml = 18g of salt should be weighed out.

chemistry 
DrBob222
It looks good to me.
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