Which is a pure substance?

soda

gasoline

salt water

carbon dioxide

Whic of the following fromulas represents a nonpolar molecule? a) N2 b) H2O c) NaCI d) HCI

Describe the mass of the reactants and products given the balanced chemical reaction. a. the mass of the products is 2/3 that of the reactants. b. the mass of the reactants equals the mass of the products. c.

Which reaction takes place in a nuclear fission reactor

A state function represent?

A sample of a compound contains 9.11 g Ni and 5.89 g F. What is the empirical formula of this compound? A.) NiF B.) Ni3F2 C.) NiF2

As a star increases in brightness, which of the following values becomes smaller? A. density B. magnitude C. temperature D. luminosity

If you are launching a matchstick rocket, the action force is the rocket pushing the gases down. what is the reaction force

Most of the daily radiation that you are exposed to originates from which of the following sources? rocks and soil X-rays nuclear power plants carbon-14

Oceanic crust is - made mostly of granite made mostly of limestone and salt thinner than continental crust thicker than continental crust

Calculate the molarity of a solution prepared by dissolving 1.00 g of ethanol, C2H5OH, in enough water to give a final volume of 101 mL