The following data were obtained in a study of an enzyme known to follow michaelis-menten kinetics: substrate added (umol/min) (mmol/l) - - - - - - - - - - - - - 217 325 433 488 647 649 1,000 1,500 a. what is the approximate maximum velocity for this enzyme (be sure to include units)? explain how you know. b. what is the approximate michaelis-menten constant for this enzyme (be sure to include units)? explain how you know.

Describe the chemical reaction based on the chemical equation below. also, explain whether the equation is balanced.

Complete the sentence. the lower the hydrogen ion concentration, the the ph. higher lower closer to 7 closer to 0

Hot air balloons float in the air because of the difference in density between cold and hot air. in this problem, you will estimate the minimum temperature the gas inside the balloon needs to be, for it to take off. to do this, use the following variables and make these assumptions: the combined weight of the pilot basket together with that of the balloon fabric and other equipment is w. the volume of the hot air inside the balloon when it is inflated is v. the absolute temperature of the hot air at the bottom of the balloon is th (where th> tc). the absolute temperature of the cold air outside the balloon is tc and its density is ďc. the balloon is open at the bottom, so that the pressure inside and outside the balloon is the same. as always, treat air as an ideal gas. use g for the magnitude of the acceleration due to gravity.