How many grams of glucose should we dissolve in one liter of water to get a 0.9% solution?
To calculate how many grams of glucose you should dissolve in one liter of water to obtain a 0.9% solution, you need to know the definition of a percentage solution. A 0.9% solution means that there are 0.9 grams of solute (glucose in this case) per 100 milliliters of solution.
To solve the problem, follow these steps:
1. Convert the desired solution concentration from percentage (%w/v) to grams per liter (g/L):
0.9% = 0.9 grams per 100 milliliters
To convert to grams per liter, divide by 10:
0.9 grams / 10 = 0.09 grams per 1 milliliter
Since there are 1000 milliliters in a liter, multiply by 1000 to get grams per liter:
0.09 grams * 1000 = 90 grams per liter
Therefore, a 0.9% solution would require 90 grams of glucose per liter of water.
So, to make a 0.9% solution, you would dissolve 90 grams of glucose in one liter of water.