What are the five food groups recommended by the usda’s myplate food guidance system?

What is the force of attraction between the particles in a salt crystal

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? a. 3.88 m, b. 1.03 m, c. 1.5 m, d. 15.5 m

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?