I need to make a 100mL, 10% w/w solution of 30% ammonia solution & water.
The density of my ammonia solution is 0.89g/mL.
My calculations are as follows:
10g/mL divided by 0.89g/mL = 11.2g/ml
11.2mL ammonia solution = 10g of pure ammonia which is 10% of 100g water.
Therefore if i need to make a 10% w/w solution, I will need 11.2mL of 30% ammonia mixed with 88.8mL water.
Could someone who is familiar with w/w solutions please check my calculations and tell me if I am calculating this correctly or not?
Any help is greatly appreciated.