Answer:
<h2>938.54 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 the final answer as
<h3>938.54 moles</h3>
Hope this helps you
Atomic mass of sodium is 22.9 g/mol
atomic mass of chloride is 35.45 g/mol
sodium chloride is 22.99 + 35.45= 58.44 g/mol
Answer:
Answer has been given below.
Explanation:
- According to Beer's law-
- represents molar absorptivity of a solution, c represents molarity of solution and l represents cell thickness.
- Measurement of absorption is done by taking solutions of a particular solute with different concentrations. A particular solute has a particular maximum absorption wavelength. So absorption experiment is done by keeping this maximum absorption wavelength constant.
- remains constant for a particular solute and a particular absorption wavelength.
- During absorption experiment, same cuvette with a particular cell thickness is used. So "l" remains constant during experiment.
- So the variables are "c" and "A" as absorption depends on concentration of solution.
- Therefore Beer's law can be considered as y=mx relation, where y is equivalent to "A" , x is equivalent to "c" and m is equivalent to "".
- Now, y=mx represents a straight line passing through origin. Therefore y-intercept of any Beer's law plot equal to zero.
It would be MnSO4
The (II) lets you know it’s the form with a 2+ charge and Sulfate has a 2- charge
These will cancel out making it plain MnSO4
If it was manganese (iii) sulfide the answer would be Mn2(SO4)3