A substance that undergoes a change in a chemical reaction is

a. a product.

c. a reactant.

b. a chemical.

d. an enzyme.

When the compound, Ba (C2H3O2) 2, is mixed with water, the Ba (C2H3O2) 2 is: soluble because compounds containing the C2H3O2 - ion are soluble in water insoluble because most compounds containing the C2H3O2 - ion are insoluble in water soluble

The rate constant is found to be 3.9 x 10-5 M-1 s-1. Calculate the rate of formation of ozone when the concentration of oxygen atoms is 3.0 x 10-14 molar and the concentration of diatomic oxygen is 1.3 x 10-14 molar.

Use the equation. How much SiCl4 is needed to produce 2.7 moles HCl? SiCl4 + 4 H2O - - > H4SiO4 + 4 HCl

In the heating of most metal alloys, melting begins at a certain temperature and concludes at a higher temperature. In these cases, which of the following temperatures marks the beginning of melting: a. solidus b. melting c. liquidus d.

6.02 X 10 to the 24th molecules of CuF is equal to how many moles of CuF?

Was the relationship among temperature, heat, and thermal energy?

What will most likely happen when a warmer air mass exists above a polar ice sheet? The temperature of the ice sheet will be lowered. Heat will be transferred from the air mass to the ice. The air mass will exert high pressure and rise upwards.

A 2.00 L sample of gas at 35 C is to be heated at constant pressure until it reaches a volume of 5.25 L. To what Kelvin temperature must this sample be heated?

Of the following reactions, which one produces oxygen gas? Fermentation Anaerobic respiration Aerobic respiration Photosynthesis

Describe the electrodes in this iron-copper galvanic cell.