The match heated the air/gas inside the flask. Once the air was heated, the egg was placed so it sealed the flask. Then the air/gas inside the flask cooled. When the air/gas inside flask cooled, what happened to volume of the gas? A) The air volume increased.

b) There were more particles of air inside the flask.

c) The air volume decreased.

d) The air particles moved faster.

3) in peaches, [oh]=3.16x10-11 m a) find [h+ ] b) what is the ph? c) is the solution acidic, basic, or neutral?

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.

What is the density, d, of a substance with a volume of v = 12.5 cm3 and a mass of m = 74.4 g ?