Translate the following chemical equation into a sentence. CH4 + 2O2 CO2 + 2H2O

How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8

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.

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is