Select the correct answer from each drop-down menu.
What advantages does Andy obtain by using instrumental methods of chemical analysis?
Andy is a forensic technician analyzing the chemical makeup of a bloody glove found at the scene. He decides to use instrumental
methods instead of traditional chemical analysis testing Instrumental methods are more
because they take out the
element of human error. They are also
✓, which means that Andy can process large numbers of samples simultaneously.

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.

Observations show that interstellar clouds can have almost any shape and

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.