Which of the following molecules or ions contain polar bonds? (a) O3

(b) S8

(c)O22−

(d)NO3−

(e) CO2

(f) H2S

(g)BH4−

What factor besides temperature affects the boiling point of water? a. mass b. number of moles c. volume d. pressure

How does a nuclear reactor produce electricity? a. high-energy gamma rays are converted by a generator into electricity. b. the heat from the reaction turns water to steam, which runs a generator. c. the reaction produces a stream of electrons that flow through wires and into batteries. d. the heat released from the reaction is used to burn coal or gas to produce electricity. e. control rods absorb the neutrons emitted and release a stream of electrons as electricity.

Acertain reaction has a activation energy of 54.0 kj/mol. as the temperature is increased from 22c to a higher temperature, the rate constant increases by a factor of 7.00. calculate the higher temperature. c (report only numerical answer)