When 1.50 g of Ba(s) is added to 100.00 g of water in a container ...

[mrsjacobs44]

When 1.50 g of Ba(s) is added to 100.00 g of water in a container open to the atmosphere, the reaction shown below occurs and the temperature of the resulting solution rises from 22.00C to 33.10C.
 
  If the specific heat of the solution is 4.18 J/(g  C), calculate H for the reaction, as written.
 
   Ba(s) + 2 H2O(l)  Ba(OH)2(aq) + H2(g) H = ?
 
  A) -431 kJ
  B) -3.14 kJ
  C) +3.14 kJ
  D) +431 kJ

Question 2

What is the concentration (M) of sodium ions in 4.57 L of a .398 M Na3P solution?
 
  What will be an ideal response?

[olivia_paige29]

Answer to Question 1

A

Answer to Question 2

1.19

[mrsjacobs44]

Thanks for the timely response, appreciate it

[mohan]

Gracias!