3. You have a 2.40 L container of air at STP. From out of nowhere, Bigfoot stomps on it, decreasing the
container's volume down to 0.500 L and increasing the pressure to 8.00 atmospheres. How hot, in OC, is
the air in the container now?

The mass has escaped into a gas which you can not see so the law stays true.

U whay do you need with?

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom