Stery Test
Submit Test
Tools
Info
Select the correct answer from each drop-down menu.
A lab director asks two students, Lydia and Damien, to each select a bottle of a concentrated weak base. When they reach the cabinets, they find
different chemical solutions with varying concentrations. All of the options are bases, which bottles should they choose?
Lydia should select the bottle of
5.0 M ammonia
Damien should select the bottle of
Reset
Next
5.0 M calcium hydroxide
8.0 M potassium carbonate
4.1 M potassium hydroxide
0.003 M cesium hydroxide
is

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.

What overall charge must all compounds have

What type of electromagnetic radiation has a shorter wavelength than blue light