A photovoltaic panel with an efficiency of 19% receives an average insolation equal to theaverage worldwide average insolation on a horizontal surface. This panel is used with anappropriate storage system (100% efficient) to meet the average household electricity requirements

Required:
a. What is the required area of the panel?
b. What is the annual savings in CO2 emissions compared to the same amount of electricity supplied by 40% efficient coal-fired generating stations?

Imagine you work as a consultant, and your daily job involves listening to the constructive criticism of others. as part of your job, you must listen to opposing viewpoints to make important decisions. in this activity, you are a consulting dam engineer. you must make a decision about four different dams; should they be repaired, taken down, or left alone? you will listen to contrasting opinions about what should be done with the dams before you make the final decision. as the consulting dam engineer, what do you decide to do with this dam? explain your reasoning. by making your decision, did you support the opinions of the mayor and/or the dam safety official? why or why not? (site 1)

The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o