The graph shows the changes in the phase of ice when it is heated. Phase Change of Ice

Which of the following temperatures describes the value of C? (4 points)
100 °C, because it is the melting point of ice.
Oь
100 °C, because it is the boiling point of water.
Ос
Less than 100 °C, because Crepresents the temperature at which ice melts.
Od
Less than 100 °C, because Crepresents the temperature at which water evaporares.

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.

Why is nh3 classified as a polar molecule

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *