Assuming that the gases are ideal calculate the amount of work done (in joules) in each of the following reactions. In each case, is the work done on or by the system? (a) The oxidation of one mole of HCl(g) at 2000C. 4HCl(g) + O2(g)  2Cl2(g) + 2H2O(g)
(b) The decomposition of one mole of nitric oxide (an air pollutant) at 3000C. 2NO(g)  N2(g) + O2(g)

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules