Which sample of HCl(aq) contains the greatest number of moles of solute particles?
A) A sample of a 2.0 M HCl(aq) solution
B) A sample of a 3.2 M HCl(aq) solution
C) A sample of a 0.20 M HCl(aq) solution
D) A sample of a 1.0 M HCl(aq) solution

Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water