Radon is a radioactive noble gas that can sometimes be found in unventilated basements. a sample of 1.35×10−4mol of radon gas is held in a container with a volume of 3.03ml. a quantity of radon gas is added to the container, which is then found to have a volume of 7.79ml at the same temperature and pressure. how many moles of radon were added to the container?

2.12*10^-4 moles

Explanation:

If 3.03ml contains 1.35*10^-4mol then 7.79 will contain 7.79ml*1.35*10^-4/3.03= 3.47*10^-4 moles

Amount added= (3.47-1.35)*10^-4=2.12*10^-4moles

solute : a solute is a substance that is dissolved in another substance is known as a solvent. it is mixed with a special mixture know as homogeneous mixture.

solvent: a solvent is a substance that dissolved a solute, which results in a solution is known as solvent.