A sample of nitrogen gas (N2) containing 1.5 x10^23 particles has the same number of particles as a sample containing:

A.

0.50 moles Ne

B.

2.0 moles He

C.

1.0 moles hydrogen gas

D.

25 moles oxygen gas

Predict the relative bond lengths of the three carbon-oxygen bonds in the carbonate ion (co2−3). what would you expect the charge to be on each oxygen? match the words in the left column to the appropriate blanks in the sentences on the right. make certain each sentence is complete before submitting your answer.

Now look at the segment of the graph between the two data points marked with black squares. describe how the boiling point and melting point plots behave between these points. be as specific as possible.

What is the reduction potential of a hydrogen electrode that is still at standard pressure, but has ph = 5.65 , relative to the she?