Complete equation for combustion of 3-methylheptane

If the element whose electric configuration ends in the d sublevel, the element is calssified as? a. inner transition b. noble gases c. representative d. transition

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

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains