An evacuated cylinder has a volume of 50 liters. If 20 liters of nitrogen gas and 20 liters of oxygen gas are pumped into this evacuated cylinder, how much of the cylinder is filled with the two gases?

a. Only 80 percent because only 40 out of 50 liters are used.
b. The entire container because gases will expand to fill it.
c. Only 80 percent because of the low molecular weight of the two gases.
d. The entire container because of the low molecular weight of the two gases.

Option b. The entire container because gases will expand to fill it.

Explanation:

One exceptional ability of gas is to fill the container in which they are poured into. Since the forces of cohesion within the gas molecules are negligible, the gases will expand to fill the entire container

a patient chooses to not take a beneficial medical treatment.

explanation:

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).