You have a large balloon you want to fill, but you have very little helium left. You blow up the balloon with air first, which has nitrogen at 0.700 atm, oxygen at 0.235 atm, and other gases at 0.017 atm. If the balloon has a final pressure of 1.150 atm, what is the pressure of the helium you added after the air

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.