Friday
August 1, 2014

Homework Help: Chemistry

Posted by Rachael on Saturday, January 15, 2011 at 7:13am.

The question is: Isotonic saline is a 0.9% (g/100ml) solution of salty water. You are asked to make up 2L of isotonic saline. How much salt should you weigh out?

I got the answer of 18g with the following working:

9 1000(ml) x 100 = 0.9
Therefore 9% of 1000ml (1L) is 9g
Multiply 9g by 2 because it is for 2L of water = 18g

Is this method of calculation suitable for a chemistry assignment or is there another way to do it?

Thanks.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

chemistry - Isotonic saline is often given to patients intravenously to ...
chemistry - Isotonic saline and is often given to patients intravenously to ...
chemistry - Isotonic saline is a 0.9%(g/100ml) solution of salty water. You are ...
math - a pharmacist mixed some 10% saline solution with some 15% saline solution...
algebra - Nurse erika needs to prepare 12 liters of a 10% saline solution. The ...
algebra - Nurse erika needs to prepare 12 liters of a 10% saline solution. The ...
Math - A saline solution is 20% salt. How many gallons of water must be added to...
chemistry - the normal concentration of sodium chloride in blood is 0.9%(w/v). ...
chem 4 - How many grams of sodium chloride are needed to make 1 L of 0.9% (m/v...
chem engineering - Mass balance on an intravenous injection (IV) bag A nurse ...

Search
Members