A sample of water has a mass of 100.0 g. Calculate the amount of heat required to change
the sample from ice at -45.0°C to liquid wwater at
75.0°C. Use the chart to complete the multiple
steps required to arive at the final answer. Type in
your answers below using 3 digits.

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.

Which of the following warnings would an agricultural chemist tell a farmer who wants to recycle his or her own ammonia? recycling ammonia is a difficult process that sometimes takes weeks. recycling ammonia requires a degree in biochemistry or a related field. recycling ammonia can be harmful because it is highly flammable and toxic. recycling ammonia costs too much money considering the price of the necessary chemicals.

Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c