combustion analysis of a 1.388g sample of estrone produces 5.545g CO2 and 1.388 H2O. the molar mass of estrone is found by mass spectrometry to be 270.36 g/mol. find the molecular formula for estrone

Initially, the balloon had 3.0 liters of gas at a pressure of 400 kpa and was at a temperature of 294 k. if the balloon is cooled to 277 k and its volume decreased to 1 l, what will the new pressure in the balloon be?

Noble gases are the most reactive elements on the periodic table. a. true b. false

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.