How many molecules of n2 gas are present in a 2. 5 l flask.

When amy exercises in her fitness center for 1 hr she burns a total of 475 calories.if she burns 9 calories a minute jogging on the treadmill and then burns 6.5 calories a minute pedaling on the stationary bicycle how many minutes of the hour does she spend exercising on the bicycle?

Which of the following does the reading test of the sat ask you to do ?

Guys plz and say a best answer i will give 15 points how we should prepare for a scholarship exam