.The following molecular views show reactant solutions for a precipitation reaction (the H20 molecules have been omitted for clarity.) 1+ 24 14 2+ 2+ 1+ Beaker A Beaker B Which of the following compounds is the REACTANT DISSOLVED in Beaker A? (1 point) a. i. Ba(NO3)2 ii. Na2O iii. Pbl2 iv. CuSO4 v. KF vi. FryP b. Which of the following compounds is DISSOLVED in Beaker B? (1 point) i. NaCI ii. Mgo ii. Fe(CI03) iv. CrPO4 v, (NH4)2CO3 vi. AlBr c. Write the molecular equation for the reaction that occurs when the 2 beakers are mixed. (Ipoint) BCE: d. When the 2 beakers are mixed, what is the precipitate that is formed? Formula Please) (1 point)

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.

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

What is the lowest number energy level where a d sublevel is found