Which expression represents the percent by mass of nitrogen in NH4NO3?

4. How many grams of each element would be present in a 1 Liter (1050g) bottle of pure vinegar (acetic acid) ?

Calculate the molarity of the two solutions. a). The first solution contains 0.550 mol of NaOH in 2.50 L of solution. b). The second solution contains 15.7 g of NaCl in 709 mL of solution.

The solvent in a solution evaporates out over time leaving behind the solute. Why is this a mixture

What is the best course of action if you are out driving during a thunderstorm? a) Stay in your car b) Find a tree to stand under c) Find a low place to crouch d) Get out of the car and stand in the open

What is the molality of a solution that contains 75.2 grams of AgClO4 in 885 grams of benzene? A.) 0.41 m B.) 8.20 m C.) 4.10 m D.) 0.83 m

What device changes mechanical energy into electrical energy? Question 4 options: transformer generator copper wire light switch

Reaction rates are affected by how often the particles collide true false

A 25 N and 5 N force pull to the right. Friction is 10 N. If the object is 5 kg, find the net force and acceleration.

What properties of matter are intensive independent of their size

What is the density of an object having a mass of 8.0g and a volume of 25cm3