Answer:
Explanation:
The number of moles is given by dividing the total number of molecule of water by the Avogradro's Number:
Answer:
4.53gm
Explanation: n=m/M
n is # of moles
m is mass
M is molar mass
so m=n*M when you rearrange the equation
Answer:
A solution is made by dissolving 4.87 g of potassium nitrate in water to a final volume of 86.4 mL solution. The weight/weight % or percent by mass of the solute is :
<u>2.67%</u>
Explanation:
Note : Look at the density of potassium nitrate in water if given in the question.
<u><em>You are calculating </em></u><u><em>weight /Volume</em></u><u><em> not weight/weight % or percent by mass of the solute</em></u>
Here the <u>weight/weight % or percent by mass</u> of the solute is asked : So first convert the<u> VOLUME OF SOLUTION into MASS</u>
Density of potassium nitrate in water KNO3 = 2.11 g/mL
Density = 2.11 g/mL
Volume of solution = 86.4 mL
Mass of Solute = 4.87 g
Mass of Solution = 183.2 g
w/w% of the solute =
w/w%=2.67%
Explanation:
As it is given that value of equilibrium constant is .
And, it is known that if the value of K, that is, equilibrium constant is greater than 1 then the reaction is favorable and proceeds in the forward direction.
This means that formation of products is favored then. As a result, concentration of products will be more.
Whereas if value of K is smaller than 1 then reaction is unfavorable and proceeds in the backward direction. As a result, concentration of reactants will be more.
Since, it is given that K = which is greater than 1. So, it means reaction is proceeding in the forward direction. Hence, concentration of products which is will be more.
Thus, we can conclude that for the given reaction the equilibrium concentration of the reactants are much smaller as compared to the equilibrium concentration of the product.