What is the purpose of the catalyst?

A. to start the chemical reaction

B. to stop the chemical reaction

C. to speed up the chemical reaction

D. to make the chemical reaction safe to observe

Which has more mass a kilogram of bricks or a kilogram of feathers explain

In two or more complete sentences, explain how you can prove that the number of degrees that the Moon rotates around the Earth each day is approximately 12.2⁰.

cuantos gramos de sulfato de cobre (CuSO4), disueltos en 25 ml de agua, se necesitan para preparar 100 ml de disolución a 80 % en masa?

The nuclear fission process releases neutrons and a. alpha particles b. electrons c. energy d. beta particles

If a compound has a molar mass of 180 g/mol and its empirical formula is CH20, what is its molecular formula? CH20 C₂H4O2 C6H1206 C12H22011

Isopropyl alcohol (C3H8O) is a common solvent used for cleaning and disinfectant purposes. Its mass spectrum is shown below.

How is an unsaturated fat converted to into a saturated fat?

Is hydrofluoric acid stronger than acetic acid?

How much energy does an electric hair dryer use if it draws 8.3 amps of current when using 120 volts for 5.0 minutes?

You need a 45% alcohol solution. on hand, you have a 480 ml of a 40% alcohol mixture. you also have 85% alcohol mixture. how much of the 85% mixture will you need to add to obtain the desired solution?