There are 0.000076 moles in 4.6 x 10^19 atoms.
Answer:
31.95 g
Explanation:
find the molar mass of Al(NO3)3
(Al = 27, N = 14, O = 16)
molar mass of Al(NO3)3 = 27+ (14+16×3)×3
= 213 gmol^-
mass = 213 ×0.15
= 31.95g
Answer:
[R] = [Z] > Q
Explanation:
Given the equilibrium:
X(g) + 2 Q(g) ⇄ R(g) + Z(g)
The equilibrium constant will be given by:
Kc = 1.3 x 105 at 50ºC = [R] x [Z] / ( [X] x [Q]² )
This value is telling us that at equilibrium the products quantities will be much higher than the reactants.
Looking at the answer choices we see that (a) is false since this is an equilibrium not a areaction that goes to completion;(b) is is false because again this is an equilibrium and it would also imply that Kc is one; (c) is false because in the reaction the ratio is 1X : 2Q.
The last choice is the true statement since the equilibrium constant favors the products. This statement would haven true if Kc had been much less than one.
