Karlie bought a 2.2 liter helium balloon at the mall and put the balloon in her car for several hours while she continued to shop. When Karlie bought the balloon, the temperature inside the mall was 20.0°C. When Karlie returned to her car several hours later, the temperature in her car was 31.0°C. What happened to Karlie’s balloon while inside her car? *

Pbco3 –> pbo+ co2. how many liters of carbon dioxide gas is produced from the decomposition of 32 grams of lead (ll) carbonate?

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?

Which of the following statements is true about energy quantization at the atomic level? electrons in the outermost orbits are the most stable. electrons in all the orbits around the nucleus have the same amount of energy. electrons in the orbit closest to the nucleus have the least amount of energy. electrons absorb or release the same amount of energy independent of the energy levels.