How many moles of Magnesium( Mg) are in 0.250 Kg of Mg?

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

The energy that powers a hurricane is derived from

At 35.0°c and 3.00 atm pressure, a gas has a volume of 1.40 l. what pressure does the gas have at 0.00°c and a volume of 0.950 l? which equation should you use? p2= p1v1t2/t1v2what is the pressure of the gas? 3.92 atm these are the answers