If the pressure exerted on a 400 ml sample of hydrogen gas at constant temperature is increased from 1.5 atm to 5 atm, what will be the final volume of the sample?

Answer : The final volume of the sample of gas is, 120 mL

Explanation :

According to the Boyle's law, the pressure of the gas is inversely proportional to the volume of gas at constant temperature and moles of gas.

or,

where,

= initial pressure = 1.5 atm

= final pressure = 5 atm

= initial volume = 400 mL

= final volume = ?

Now put all the given values in the above formula, we get:

Therefore, the final volume of the sample of gas is, 120 mL

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.