Think about the lab procedure you just read. label each factor below with v for variable or c for constant. temperature of the gas: volume of the gas in the syringe: weight put on the syringe: number of moles of gas in the syringe: mass of gas in the syringe: number of gas molecules in the syringe:

What is lincoln's purpose in writing this speech? question 1 options: to stress the difficulties of war to honor those who died in the war to call for an end to the war to call the country to join a new war

List four observations that indicate that a chemical reaction may be taking place

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