3.5 moles of nitrogen gas occupied a volume of 2.5 L at a certain temperature and pressure. At this temperature and pressure how many moles of nitrogen gas is present when the volume expands to 10.0L

This drawing shows a human body system. what is the primary function of this body system?

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of