Shane's mother is training for a marathon. on saturdays, she does a 10 mile
run in 90 minutes. what is her average speed in miles per hour?
o
a. 7.8 mph
o b. 6.7 mph
o c. 6 mph
o d. 9 mph

Estimate the change in the gibbs energy and molar gibbs energy of 1.0dm3 of octane when the pressure acting on it is increased from 1.0 atm to 100 atm. the mass density of octane is 0.703 g cm−3

What does si stand for,when referring to a system of measurement

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.