<u>Answer:</u> The correct answer is Option C.
<u>Explanation:</u>
To calculate the number of moles, we use the equation:
Given mass of methane = 48.2 g
Molar mass of methane = 16 g/mol
Putting values in above equation, we get:
According to mole concept:
1 mole of compound contains number of molecules.
So, 3.0125 moles of methane will contain = number of molecules.
Hence, the correct answer is Option C.
Philosophy is not a notan example of science!
EXAMPLE: What is the molarity of a solution made by dissolving 5.67 g of potassium chloride
in enough water to make 100.0 mL of solution?
This data gives a relationship between amount of solute and volume of solution: 5.67 g KCl /
100.0 mL. To find molarity we must convert grams KCl to moles KCl and mL solution to L:
5.67 g KCl 1 mol KCl 1000 mL 0.760 mol KCl
x x = or 0.760 M KCl
100.0 mL 74.6 g KCl L L
Answer:
As we are not provided with ¹H-NMR spectrum therefore we can not conclude a single result for the minor chlorination of propane with Molecular formula C₃H₆Cl₂.
Hence, we will draw all the possible isomers with molecular formula C₃H₆Cl₂ and predict the ¹H-NMR spectrum for each of them separately.
Below is the structures of possible minor products and the NMR spectrum respectively.
Possible Product A:
If the minor product formed is 2,2-Dichloropropane then it will give only one singlet peak in NMR spectrum.
Possible Product B:
If the minor product is 1,1-Dichloropropane then it will exhibit two triplets and one multiplet as shown in figure.
Possible Product C:
If the minor product is 1,2-Dichloropropane then it will give four peaks in NMR. The extra peak is formed due to two enantiomers about the chiral carbon.
Possible Product D:
If the minor product is 1,3-Dichloropropane then it will exhibit one triplet and one quintet signal as shown in figure.