The Earth's atmosphere is made up of approximately

__

% nitrogen.

A. 1

B. 21

C. 78

D. none of the above

What mass of silver chloride can be produced from 1.65 l of a 0.240 m solution of silver nitrate?

Collision theory states that the rate of a reaction depends on the number of collisions between molecules or ions, the average energy of the collisions, and their effectiveness.

How many nitrogen atoms are present in calcium nitrate, Ca (NO3) 2?

A carbon-carbon double bond has a greater bond energy than a carbon-carbon single bond. Because of the greater bond energy, a carbon-carbon double bond is and than a carbon-carbon single bond.

A mixture of sand and table salt can be separated by filtration because the substances

To which digestione organ dose food travel it leaves the stomach

How should a stopper be handled after is has been removed from a reagent bottle?

How will increasing the pressure on the system affect this equilibrium reaction? 2H2 (g) + O2 (g) - > 2H2O (g)

What are small round structures in the cell that breaks down large food particles into smaller ones

A balloon has a volume of 2.5 L and contains 0.100 moles of Helium. Another balloon has a volume of 5.0 L. They are at the same temperature and pressure. How many moles of gas does the second balloon contain?