I'm giving 50 needs 2 b which substances are needed in the smallest amount by a human body? a. carbohydrates b. lipids c. proteins d. vitamins

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution?

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule

Calculate the molarity of each aqueous solution: a. 78.0 ml of 0.240 m naoh diluted to 0.250 l with water b. 38.5 ml of 1.2 m hno3 diluted to 0.130 l with water