Question

Convert 0.9% glucose to g/100ml?

Answer 1

Answer:

If we consider a solution density of 1 g/ml, it is 0.9 g/100ml

Explanation:

A solution 0.9% glucose can be expressed as follows:

$\frac{0.9 g glucose}{100 g solution}$

If the density of the solution (at a given temperature) is 1 g/ml, the solution concentration can be calculated as follows:

$\frac{0.9 g glucose}{100 g solution} . \frac{1 ml solution}{1 g glucose} = \frac{0.9 g glucose}{100 ml solution}$

So, to calculate a solution concentration in g/ml from a %w/w concentration you have to only divide it into the solution density. Remember that solution density depends on the temperature.

Answer 2

Convert a 0.9% glucose solution to g/ 100 ml.

How many grams of glucose would you need to add to 1 liter of water to make a 0.9% glucose solution?  Use dimensional analysis.

If you had a 0.9% glucose solution how many mol/L do you have?  Calculate glucose’s molecular weight first and then use dimensional analysis to calculate your final answer.

If you had a 0.9% glucose solution how many osmoles/L do you have?  You have to take into account how many particles glucose dissociates into.

If you had a 0.9% NaCl solution how many osmoles/L do you have?  You have to take into account how many particles NaCl dissociates into.