A gas filled balloon having a volume of 2.50 L at 1.21 atm and 25oC is allowed to rise to the stratosphere (~30km above the surface of the Earth), where the temperature and pressure are -23oC and 3.00 x 10-3 atm, respectively. Calculate the final volume of the balloon.

Determine the empirical formula of a compound containing 40.6 grams of carbon, 5.1 grams of hydrogen, and 54.2 grams of oxygen. in an experiment, the molar mass of the compound was determined to be 118.084 g/mol. what is the molecular formula of the compound? for both questions, show your work or explain how you determined the formulas by giving specific values used in calculations.

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

Describe the forces both attractive and repulsive that occur as two atoms move closer together.