Determine the new volume when 53 ml of a gas with a temperature of 41 deg C has its temperature changed to 40 deg C.

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)

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