Can anybody check my answer? ~ a given mass of air has a volume of 10.00l at 100kpa. what volume will it occupy at 50kpa if the temperature does not change? five moles of a gas occupies 20l of space with a pressure of 101.3kpa. what is the temperature of the gas?

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

Based on its chemical properties, identify the position of each chemical family on the periodic table.

The volume of an unknown substance in a sealed glass jar is 50 milliliters. the volume of the jar is 200 milliliters. which state of matter could the substance be?