UV-B radiation is in the 285-315 nm region on the spectrum. Calculate the energy (in kJ/mol) of the 288 photon that is associated with skin cancer.

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

An excess of lithium oxide undergoes a synthesis reaction with water to produce lithium hydroxide li2o+h2o→2lioh if 1.05 g of water reacted, what is the theoretical yield of lithium hydroxide? a) 5.83 x 10–2 g lioh b) 1.17 x 10–1 g lioh c) 2.79 x 100 g lioh d) 1.40 x 100 g lioh

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter