A sample of an unknown compound is vaporized at 130. °C. The gas produced has a volume of 960. mL at a pressure of 1.00 atm, and it weighs 3.99 g. Assuming the gas behaves as an ideal gas under these conditions, calculate the molar mass of the compound.

Starch and are common polysaccharide carbohydrates found in plants. sucrose glycogen fructose cellulose

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

The tendency of water molecules to stick together is referred to as a) adhesion b) polarity c) cohesion d) transpiration e) evaporation