An ice cube melts and cools the surrounding beverage. (The ice ...

[ARLKQ]

An ice cube melts and cools the surrounding beverage. (The ice cube is the system.) Which of the following statement is correct?
 
  A) The system loses heat to the surroundings.
  B) The system gains heat from the surroundings.
  C) The system does work on the surroundings.
  D) The surroundings does work on the system.

Question 2

The two protein chains in insulin are held together by ________.
 
  A) disulfide linkages
  B) hydrophobic interactions
  C) hydrogen bonds
  D) salt bridges
  E) All of the above

[mrphibs]

Answer to Question 1

A

Answer to Question 2

A

[ARLKQ]

Thanks for the timely response, appreciate it

[recede]

TYSM