How many valence electrons does an atom of C have? A) 1 B) 4 ...

[robinn137]

How many valence electrons does an atom of C have?
 
  A) 1
  B) 4
  C) 2
  D) 3

Question 2

A sample of liquid isopropyl alcohol is placed in a sealed container. Some of the volatile isopropyl alcohol vaporizes. Does the mass of the sealed container and its contents change during the vaporization? Explain.
 
  What will be an ideal response?

[chreslie]

Answer to Question 1

B

Answer to Question 2

No. The vaporized isopropyl alcohol is just in a different physical state. It still has mass and therefore the gas plus the remaining liquid and container have the same total mass after the vaporization of some of the isopropyl alcohol.

[robinn137]

Thanks for the timely response, appreciate it

[bulacsom]

TYSM