According to the following reaction, how many moles of Fe(OH)2 ...

[tsand2]

According to the following reaction, how many moles of Fe(OH)2 can form from 175.0 mL of 0.227 M LiOH solution? Assume that there is excess FeCl2. FeCl2(aq) + 2 LiOH(aq)  Fe(OH)2(s) + 2 LiCl(aq)
 
  A) 3.97  10-2 moles
  B) 2.52  10-2 moles
  C) 1.99  10-2 moles
  D) 5.03  10-2 moles
  E) 6.49  10-2 moles

Question 2

Calculate the change in internal energy (E) for a system that is absorbing 35.8 kJ of heat and is expanding from 8.00 to 24.0 L in volume at 1.00 atm. (Remember that 101.3 J = 1 Latm)
 
  A) +51.8 kJ
  B) -15.8 kJ
  C) -16.6 kJ
  D) -29.3 kJ
  E) +34.2 kJ

Question 3

How much NaCl is needed to make 50.0 mL of a 16 (w/v) solution?
 
  A) 2.0 g
  B) 4.0 g
  C) 8.0 g
  D) 12 g
  E) 16 g

[xiazhe]

Answer to Question 1

C

Answer to Question 2

E

Answer to Question 3

C

[tsand2]

Thank you!

[xiazhe]

Always glad to help...