A sample of carbon dioxide occupies a volume of 2.54L at 175.6 kPa pressure. What pressure would the gas exert if the volume was decreased to 1.75 L?

The answer to your question is  P2 = 254.9 kPa

Explanation:

Data

Volume 1 = V1 = 2.54 l

Pressure 1 = P1 = 175.6 kPa

Volume 2 = V2 = 1.75 l

Pressure 2 = P2 = ?

Process

To solve this problem use Boyle's law.

          P1V1 = P2V2

-Solve for P2

         P2 = P1V1 / V2

-Substitution

         P2 = (175.6 x 2.54) / 1.75

-Simplification

         P2 = 446.02 / 1.75

-Result

         P2 = 254.9 kPa

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.