Energy per gram released by chocolate answer in kJ/g
1000J=1kJ
600.0g water warmed up

Chocolate:
initial mass 16.32g
final mass 15.02g
change in mass 1.30g
initial temp of water 20.0°C
final temp of water 31.6°C
change in water temp 11.6°C​

If a 60-g object has a volume of 30 cm3, what is its density? 2 g/cm3 0.5 cm3/g 1800 g * cm3 none of the above

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

What are the two largest greenhouse gases