Answer : The value of new volume is, 50.0 mL
Explanation :
Boyle's Law : It is defined as the pressure of the gas is inversely proportional to the volume of the gas at constant temperature and number of moles.

or,

where,
= initial pressure at STP = 1 atm
= final pressure = 4.00 atm
= initial volume at STP = 200.0 mL
= final volume = ?
Now put all the given values in the above equation, we get:


Therefore, the value of new volume is, 50.0 mL
Answer: A boron atom has 2 electrons at the first energy level and 3 electrons at the second energy level.
I'm sorry but the picture isn't clear enough
does it have multiple choice
they all have one thing in common and that its all made up of atoms. When these components are active it creates energy