What percent of earths surface is made up of oxygen

How many U. S. gallons are there in a cubic mile? The total proven oil reserves of the U. S. are roughly 30 x 10°bbl. How many cubic miles is this?

The speed of a wave is 65m/sec. if the wave length of the wave is 0.8 what is the frequency of the wave

A gas occupies 4.31 liters at a pressure of 101.325 kPa. Determine the new volume at 80.8 kPa.

If the density of an object is 5.2g/cm3, and it's volume is 3.7 cm3, what is it's mass?

Butanol is composed of carbon, hydrogen, and oxygen. If 1.0 mol of butanol contains 6.0  1024 atoms of hydrogen, what is the subscript for the hydrogen atom in C4H2O?

What prompted rutherford to do the alpha particle scattering experiment?

How many moles of hydrogen would be required to produce 5.0 mol of water?

What is the biggest difference between an exothermic and endothermic process? A. The direction of energy flow. B. The amount of energy transferred. C. The type of energy being transferred. D. The speed with which energy is transferred.

The mass of 1 mol of chromium (atomic mass 51.996 amu) is

Which of the following elements will tend to form a cation? A. Oxygen B. Nitrogen C. Sulfur D. Lead E. All of the Above