Calorimetry:
1. calculate the specific heat of an 25.0 gram object that generates 1500 joules of heat when the temperature is raised from 25.0˚ c to 75.0 ˚c.
2. how much heat is released by a 50.5 g sample of sample of water whose temperature was raised from 0.0 ˚c to 58.0 ˚c? (specific heat of water is 4.184j/g ˚c)
3. what mass of water is needed to raise the temperature from 50.0 c to 120.0 c. when it releases 4500.0j of heat

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

Write the overall equation for the reaction for lithium battery

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