1) Covalent bonds involve sharing of electrons. Tor F 2) lonic bonds involve transfer of electrons. Tor F
3) Metallic bonds contain a sea of mobile electrons. T or F
4) When electrons are gained, or lost ions are formed. T or F
5) VSEPR theory is not usefulin predicting shapes of molecules. T or F
6) Hybrid orbitals are formed from mixing of orbitals. T or F

Hot air balloons float in the air because of the difference in density between cold and hot air. in this problem, you will estimate the minimum temperature the gas inside the balloon needs to be, for it to take off. to do this, use the following variables and make these assumptions: the combined weight of the pilot basket together with that of the balloon fabric and other equipment is w. the volume of the hot air inside the balloon when it is inflated is v. the absolute temperature of the hot air at the bottom of the balloon is th (where th> tc). the absolute temperature of the cold air outside the balloon is tc and its density is ďc. the balloon is open at the bottom, so that the pressure inside and outside the balloon is the same. as always, treat air as an ideal gas. use g for the magnitude of the acceleration due to gravity.

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

Predict the reactants of this chemical reaction. that is, fill in the left side of the chemical equation. be sure the equation you submit is balanced. (you can edit both sides of the equation to balance it, if you need to.) note: you are writing the molecular, and not the net ionic equation. > cacl2(aq) + h20(l)