The gas SF6 is used to trace air flows because it is non-toxic and can be detected selectively in air at a concentration of 1.0 ppb. What partial pressure is this? At this concentration, how many molecules of SF6 are contained in 1.0 cm3 of air at T = 46 °C

In which phase(s) do the molecules take the shape of the container?

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.

Enzymes affect the reactions in living cells by changing the