Answer:
Step-by-step explanation:
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12
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7
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48
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Answer:
The name of the structure is ethyl acetate with one double bond. The attached document contains the structure of the compound
Step-by-step explanation:
¹H NMR =δ4.07(quartet), 1.97( singlet), 1.18(triplet)
2H 3H 3H
¹³C NMR = δ 170, 60, 20, 10 ppm
from the molecular formula,C₄H₈O₂ and spectrum study, the structure of the compound will have a double bond which is calculated as DU= 4+1-(8/2)= 1
thus, the name of the compound as drawn in the attachment is ethyl acetate
<h3>
Answer: True</h3>
The key word here is "may" meaning that we could easily have 3 rational roots as well. An example of a cubic having 3 irrational roots would be
(x-1)(x-2)(x-3) = x³ - 6x² + 11x - 6
This has the rational roots x = 1, x = 2, x = 3.
However, we could easily replace 1,2,3 with any irrational numbers we want. So that's why the statement "a cubic has three irrational roots" is sometimes true.
In some cases, a cubic may only have 1 real root and the other 2 roots are imaginary.