Given the atomic radius of helium, 0. 32 å, and knowing that a sphere has a volume of 4πr3/3, calculate the fraction of space that he atoms occupy in a sample of helium at stp.

Feedback is given with little or no reservation 1.supportive 2.high-monitoring 3.positive 4.low-monitoring ?

Essay on sustainable development of soiciety

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?