Compounds in a and b were named incorrectly. On a sheet of paper draw the molecule that fits the given description. From the str
ucture you drew determine the correct IUPAC name. Write the correct IUPAC name in the blank.
a) 4-methyl-3-propylheptane
(I answered 4-ethyl-3-methylheptane and it was incorrect)
b) 2-ethyl-6,6,6-trimethylhexane
a) 4-methyl-3-propylheptane
(I answered 4-ethyl-3-methylheptane and it was incorrect)
b) 2-ethyl-6,6,6-trimethylhexane
1 answer:
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Number of moles is defined as the ratio of given mass in g to the molar mass.
The mathematical formula is:
Number of moles = (1)
Number of zinc atoms is equal to , by Avogadro number, number of moles can be calculated.
As, 1 mol= atoms, hence,
= 0.2822 mol
Now, from formula (1), calculate mass in g (molar mass of zinc = 65.4 g/mol)
0.2822 mol =
mass in g =
= 18.45588 g
Thus, by rounding off the above number, it will come near about 19 g approximately.
Hence, option (C) is the correct answer.