What is one of the drawbacks to the use of solar energy for generating electricity? a. the needed equipment is expensive. b. solar energy is expensive. c. solar energy can't be converted to electricity. d. solar energy produces low amounts of air pollution

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together

How do you know when a chemical reaction has occurred

How many moles of lead are in 1.50 x 10^12 atoms of lead? could you explain the answer as well and not just give it to me i am refreshing for finals and i need to know how to do it