Chemical equations need to be balanced in order to satisfy the law of

a. molecular changes.

b. conservation of mass.

c. products and reactants.

If a wave is traveling at a certain speed and its frequency is doubled, what happens to the wavelength

How many significant gigures are in each mesasurments 303,000mm

The dissolution of barium hydroxide in water is an exothermic process. Which of the following statements is correct? A) The enthalpy of solid barium hydroxide plus pure water is less than that of the solution, at the same temperature.

How is molarity measured

If 10.95 g K2SO4 is used up in a reaction, How many atoms would that be?

Convert 150 g/L to the unit g/mL. A. 15,000 g/mL B. 15 g/mL C. 0.15 g/mL D. 0.0015 g/mL

What are the oxidation numbers of the elements in the nitrite ion, no2-?

Which of the following would release the most heat upon cooling from 75°C to 50°C?

What is the atomic mass number of carbon?

How does the size of ions affect the conductivity of a solution?