Two scientists, Tara and Victor, work in the same scientific field of study. Victor asks Tara to review a research paper that he
1 answer:
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Answer:
<h2>830.56 moles</h2>Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
We have the final answer as
<h3>830.56 moles</h3>Hope this helps you
<u>Answer:</u> The experimental van't Hoff factor is 1.21
<u>Explanation:</u>
The expression for the depression in freezing point is given as:
where,
i = van't Hoff factor = ?
= depression in freezing point = 0.225°C
= Cryoscopic constant = 1.86°C/m
m = molality of the solution = 0.100 m
Putting values in above equation, we get:
Hence, the experimental van't Hoff factor is 1.21
Answer: 61.3 g of will be produced from the given masses of both reactants.
Explanation:
To calculate the moles, we use the equation:
a) moles of
b) moles of
According to stoichiometry :
5 moles of require 4 moles of
Thus 2.84 moles of require=
of
Thus is the limiting reagent as it limits the formation of product.
As 5 moles of give = 6 moles of
Thus 2.84 moles of give =
of
Mass of
Thus 61.3 g of will be produced from the given masses of both reactants.