i need help with some chemistry problems please?

Popper

New member
1.)The physiologic saline solution used in hospitals is 0.90% NaCl (mass of NaCl per volume of the solution). What is its molarity?
2.) Laboratory ammonia is 14.8M NH3(aq) with a density of 0.898 g/ml. What is the mass of NH3 in 1.0 liter of the solution?
3.) How many grams of water is required to prepare 100.00 g of a solution that is 5.75% by mass KMnO4 in water?
Any help would be much appreciated
 
Back
Top