How do you count sigma and pi bonds?

At approximately what temperature will 40g of argon gas at 2 atm occupy a volume of 22.4L a) 600K b) 550K c) 270K d) 140K

If a star is considered medium-sized, it is a) about the size of our sun b) about half the size of our sun c) about twice the size of our sun d) at least five times the size of our sun

To measure velocity you must know this

How many atoms of gold are in 1 gram of gold?

What is happening to the atoms and molecules during both physical and chemical changes?

Car Q and z are put though an endurance test to see if they can travel at 120 km/h for 5.0 hours. Each car has a 45-L fuel tank. Car z must stop to refuel after traveling for 4.2 hours. Car Q, however, travels for 5.4 hours before running out of gas.

What happened to the atoms in the heated metal ball so that it didn't fit through the ring?

A 3.00 L flexible container holds a sample of hydrogen gas at 153 kPa. If the pressure increases to 203 kPa and the temperature remains constant, what will the volume be?

Measurement of the functions of a nephron reveals a glomerular capillary pressure of 69 mm Hg, and a pressure in the capsular space of 15 mm Hg.

Water is unique because the density of it's solid is less than the density of it's liquid. Describe how life would be different if this weren't true