A 155 g sample of an unknown substance was heated from 25°c to 40°c. in the process, the substance absorbed 569 calories of energy. what is the specific heat of the substance?

How many amu are there in 8.3g?

In general, which of the following statements about metals is true? a. Metals need to be stored in sealed containers for safety. b. Metals show a wide range of chemical properties. c. Metals are highly reactive substances. d.

As you may remember, NaCl is an ionic compound composed of Na + and Cl - ions. In the oxidation-reduction reaction to form NaCl, which substance is oxidized and which is reduced? A. Sodium is oxidized and chlorine is reduced. B.

Determine the ph of a buffer solution comprised of a 1.41 m hf and 0.623 m naf. the ka of hf = 7.20 x 10-4

Using the equation below, calculate the number of grams of H2O that are formed from the reaction of 34.0 g of NH3. 4NH3 + 3O2 - -> 2N2 + 6H2O

A compound of material formed by a chemical is known as?

Which of these molecules experience london dispersion force?

What happens to the volume of most matter when it is heated?

An aqueous solution is made from a molecular compound rather than from an ionic compound. If some ions are present in solution, which best describes the solute? A. a weak electrolyte B. a nonelectrolyte C. a strong electrolyte D.

Which of the following measures the radiation given off by atoms per second?