A gas collected when the temperature is 7°C and the pressure is 140 kPa measures has a volume of 4 L. Calculate its volume at 60 kPa and 27°C .

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

a polar bond is formed when electrons are shared unevenly between atoms

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.