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katrin2010 [14]
3 years ago
8

Some fats are called "saturated" fats because __________. Select one: a. their carbon skeleton is bent to form four fused rings

b. they are hydrophilic c. they are composed of at least three fatty acid molecules attached to a glycerol molecule d. they mix easily with water e. all carbons in the carbon skeleton contain the maximum number of hydrogen atoms
Chemistry
1 answer:
marin [14]3 years ago
6 0

Answer:

All carbons in the carbon skeleton contain the maximum number of hydrogen atoms

Explanation:

Saturated fats are class of compounds having all the fatty acids containing only single bonds. In other words, carbon skeleton has only single bonds.

Unsaturated compounds undergoes hydrogenation to form saturated fats.

In hydrogenation, hydrogen atoms are added to the carbon attached to double bond. After become saturated, no more hydrogen atoms can be added.

Therefore, it can be said that in saturated fats all carbons in the carbon skeleton contain the maximum number of hydrogen atoms.

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Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i   .....(1)

Let the fractional abundance of Ir-191 be x and that of Ir-193 isotope be (1-x)

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Mass of isotope 1 = 192.96292 amu

Fractional abundance of Ir-193 = (1 - x)

Average atomic mass of iridium = 192.217 amu

Putting values in equation 1, we get:

192.217=[(190.96058\times x)+(192.96292\times (1-x))]\\\\x=0.372

Hence, the fractional abundance of Ir-191 is 0.372

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