How many grams are contained in one equivalent of iron (III) ion, ...

[torybrooks]

How many grams are contained in one equivalent of iron (III) ion, Fe3+?
 
  A) 167.6 g
  B) 55.85 g
  C) 18.62 g
  D) 0.0537 g
  E) 6.02  1023 g

Question 2

Use the Hf and Hrxn information provided to calculate Hf for IF:
 
  Hf (kJ/mol) IF7(g) + I2(g)  IF5(g) + 2 IF(g) Hrxn = -89 kJ
 
  IF7(g) -941
  IF5(g) -840
 
  A) 101 kJ/mol
  B) -146 kJ/mol
  C) -190. kJ/mol
  D) -95 kJ/mol
  E) 24 kJ/mol

Question 3

Protons possess a ________ charge, and electrons possess a ________ charge.
 
  A) negative, negative
  B) negative, positive
  C) positive, negative
  D) positive, zero
  E) zero, positive

[mrphibs]

Answer to Question 1

C

Answer to Question 2

D

Answer to Question 3

C