Abeaker contains a liquid sample of a molecular substance. both the beaker and the
liquid are at 194 k. the graph below represents the relationship between temperature and
time as the beaker and its contents are cooled for 12 minutes in a refrigerated chamber.

state what happens to the average kinetic energy of the molecules in the sample during
the first 3 minutes.

If 34.2 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 299 kelvin and 1.21 atmospheres? 2 li (s) + 2 h2o (l) yields 2 lioh (aq) + h2 (g)

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.