A piece of metal ore weighs 8.25 g. When a student places it into ...

[cdr_15]

A piece of metal ore weighs 8.25 g. When a student places it into a graduated cylinder containing water, the liquid level rises from 21.25 mL to 26.47 mL. What is the density of the ore?
 
  A) 0.312 g/mL
  B) 0.633 g/mL
  C) 1.58 g/mL
  D) 3.21 g/mL

Question 2

An atom of 131Xe contains ________ electrons.
 
  A) 131
  B) 185
  C) 77
  D) 123
  E) 54

[tsternbergh47]

Answer to Question 1

C

Answer to Question 2

E

[cdr_15]

Excellent

[Jsherida]

Thanks for the timely response, appreciate it