Answer :
Total carbons are in the structure = 13
Primary carbons are in the structure = 5
Secondary carbons are in the structure = 6
Tertiary carbons are in the structure = 1
Quaternary carbons are in the structure = 1
Explanation :
Primary carbon : It is a carbon atom that is bound to only 1 carbon atom.
Secondary carbon : It is a carbon atom that is bound to 2 carbon atom.
Tertiary carbon : It is a carbon atom that is bound to 3 carbon atom.
Quaternary carbon : It is a carbon atom that is bound to 4 carbon atom.
As we are given the name of compound is, 2,2-dimethyl-4-propyloctane.
In this compound, eight carbon are align in a straight line, two methyl group are attached at 2nd position of the carbon in main chain and a propyl group that is three membered carbon chain is attached at 4th position of the carbon in main chain.
The given compound skeletal structure is shown below.
A compound is a substance formed when two or more chemical elements are chemically bonded together. In mixtures, the substances present are not chemically bonded together.
Answer : The grams of carbon monoxide needed are 148.89 g
Solution : Given,
Mass of iron, Fe = 198.5 g
Molar mass of iron, Fe = 56 g/mole
Molar mass of carbon monoxide, CO = 28 g/mole
First we have to calculate the moles of iron, Fe.

The balanced chemical reaction is,

From the balanced reaction, we conclude that
2 moles of iron produces from the 3 moles of carbon monoxide
3.545 moles of iron produces from the
moles of carbon monoxide
Now we have to calculate the mass of carbon monoxide, CO.


Therefore, the grams of carbon monoxide needed are 148.89 g
Answer:
C. Occurs where a plate is moving down.
Explanation:
Ocean trenches are steep depressions in the deepest parts of the ocean where old ocean crust from one tectonic plate is pushed beneath another plate, raising mountains, causing earthquakes, and forming volcanoes on the seafloor and on land.
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