Answer:
0.925 mole
Explanation:
From the question given, the following were obtained:
Volume = 1.0L
Molarity = 0.925 M
Number of mole of Nickel (II) chloride =?
Molarity is simply defined as the mole of solute per unit litre of the solution.
It is represented mathematically as:
Molarity = mole /Volume
With the above equation, we can easily find the mole of Nickel (II) chloride present in the solution as follow:
Molarity = mole /Volume
0.925 = mole / 1
Mole = 0.925 x 1
Mole of Nickel (II) chloride = 0.925 mole
Answer: Option (b) is the correct answer.
Explanation:
According to Le Chatelier's principle, any disturbance caused in an equilibrium reaction will tend to shift the equilibrium in a direction away from the disturbance.
For example, 
Hence, expression for equilibrium constant will be as follows.
![K_{eq} = \frac{[Ca^{2+}][HCO^{-}_{3}]^{2}}{[CO_{2}][H_{2}O]}](https://tex.z-dn.net/?f=K_%7Beq%7D%20%3D%20%5Cfrac%7B%5BCa%5E%7B2%2B%7D%5D%5BHCO%5E%7B-%7D_%7B3%7D%5D%5E%7B2%7D%7D%7B%5BCO_%7B2%7D%5D%5BH_%7B2%7DO%5D%7D)
Since, the concentration for a solid substance is considered as 1 or unity. Therefore, adding or removing a solid will not affect the equilibrium.
Thus, we can conclude that according to Le Châtelier’s Principle, the amount of solid reactant or product present does not have an impact on the equilibrium because the solid does not appear in the equilibrium constant, so adding or removing solid has no effect.
The percent error associated with Jason’s measurement is 0.596%.
HOW TO CALCULATE PERCENTAGE ERROR:
- The percentage error of a measurement can be calculated by following the following process:
- Find the difference between the true value and the measured value of a quantity.
- Then, divide by the true value and then multiplied by 100
- The true value of the density of iron is 7.874 g/mL
- Jason observed value is 7.921 g/mL
Difference = 7.921 g/mL - 7.874 g/mL
Difference = 0.047 g/mL
Percentage error = 0.047/7.874 × 100
Percentage error = 0.596%.
Therefore, the percent error associated with Jason’s measurement is 0.596%.
Learn more: brainly.com/question/18074661?referrer=searchResults
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