Water is boiled in a flask with a balloon over the top of the water gets the balloon expand what has happened to the weight of the laskin balloon in this experiment

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

Jessica is traveling from miami, florida, to chicago, illinois. using the map, tell one way the land will change during the second half of her trip.

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '