1. Suppose we fill a sealed flask with 0.750mol of gas A, which then completely reacts to form a second gas, B, according to the reaction: 2AB. At various times during the reaction, we measure the amount of B in the flask and get the following data: a. Calculate the number of moles of A remaining in the flask at each time in the table. b. Calculate the average rate of disappearance of A for each interval in the table, in units of mol/s