D. Practice using your ideas by predicting what would happen if the following undergo beta decay: (2 pts each) i. Carbon -10  +
ii. Cesium-137  +
iii. Thorium-234  +

When fat comes in contact with sodium hydroxide, it produces soap and glycerin. determine whether this is a physical change or a chemical change. explain your answer

Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration