Cal the molarity of solution prepared by dissolving 250 of Ca (NO3) 2 to make 2.5L of solution

What happens if you put sugar in someone's gas tank?

If a dog has a mass of 19.5 kg, what is its mass in the following units? Use scientific notation in all of your answers. (a) What is the dog's mass in grams? (b) What is the dog's mass in milligrams? (c) What is the dog's mass in micrograms?

When a small amount of hydrochloric acid (hcl) is added to a solution of na2hpo4, the ph of the solution does not change markedly. the ph also does not change drastically when a small amount of sodium hydroxide (naoh) is added to this same solution.

If light travels from oil (slower medium) to water (faster medium) at an angle, what happens to the direction of the light ray in water with respect to normal?

An unknown compound was decomposed into 63.2 g carbon, 5.26 g hydrogen, and 41.6 g oxygen. what is its empirical formula?

How do frogs regulate the pressure inside their head while swimming?

Which of the following is not a characteristic of electromagnetic light waves?

Two identical vessels are filled, at the same temperature and pressure, with different gases. One is filled with hydrogen and the other with carbon dioxide. Which statement is correct? a. Carbon dioxide molecules will have inelastic collisions. b.

If Plank's constant is 6.6 x 10 (-34) J/Hz, then what is the approximate frequency of a photon having an energy of 3 x 10 (-19) Joules?

Do all organisms perform meiosis?