Which subatomic particle is the lightest?

(a) neutron

(b) proton

(c) electron

(d) all of the above

(obviously not the last one, I guess)

What happens to the particles in a substance as it freezes?

An element A has a triiodide with the formula AI₃ and a trichloride with the formula ACl₃. The triiodide is quantitatively converted to the trichloride when it is heated in a stream of chlorine, according to the reaction.

A monatomic ideal gas that is initially at 1.50 * 105 Pa and has a volume of 0.0800 m3 is compressed adiabatically to a volume of 0.0400 m3. (a) What is the final pressure

How would a balloon left in a car on a hot day change and why?

2.0 mol of gas occupy 44.8 l at a temperature of 0°c. what is the pressure of the gas

According to molecular orbital theory, all diatomic molecules with an even number of electrons will be diamagnetic. True or False?

Which of the following equilibria would be impacted by a change in pressure? Select the correct answer below: H2 (g) + I2 (g) →2HI (g) NO (g) + O3 (g) →NO2 (g) + O2 (g) 2SO3 (g) →2SO2 (g) + O2 (g) CO (g) + H2O (g) →CO2 (g) + H2

A common stain remover is sold in concentrated form as 3M sodium hypochlorite (NaOCl). You need to create 400 milliliters of a 0.5M solution of sodium hypochlorite to fill a spray bottle. What volume of 3M sodium hypochlorite is needed? 15.0 mL 66.

A chemical reaction that takes in heat is called: exothermic endothermic a phase change

Which of the following lines (of latitude or longitude) would represent by 180 longitude? South Pole Equator Prime meridian North Pole International date line