Perform the following operation observing proper significant digits. 323.7 cm+ 100 cm+ 6.8 cm= .
A. 430.51 cm
B. 429.0 cm
C. 430.5 cm
D. 431 cm

What is hidden during a lunar eclipse? isn't the moon hidden?

Orange juice has a lower or higher viscosity than chocolate syrup

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.