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3 years ago

Crude oil is derived from which of the following materials

Chemistry

2 answers:

Aleks04 [339]3 years ago

5 0

Answer:

Fossil Fuel

Explanation:

Im not sure if this is the correct answer for your assignment but it is the answer i know

AleksAgata [21]3 years ago

5 0

Answer:

Crude oil is derived from plants and animals that lived millions of years ago. Crude oil is a fossil fuel, and it exists in liquid form in underground pools or reservoirs, in tiny spaces within sedimentary rocks, and near the surface in tar (or oil) sands. Crude oil refinery produces naphtha, kerosene, diesel and asphalt, between others. These are then converted into fuel used by vehicles.

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Indicates which of the following radical chemical species and explains why

Zina [86]

Answer is: (CH3)C.
Carbon has four bonds in organic compound.
1) in (CH3)CH, carbon has four single bonds, one with hydrogen and three witn methyl group (CH₃), so he is not radical.
2) in (CH3)C, carbon has three single bonds and one free electron.
3) in (CH3)C+, carbon has three single bonds and no free electrons, he is carbocation, not radical.

5 0

4 years ago

A hypothetical element has an atomic weight of 48.68 amu. It consists of three isotopes having masses of 47.00 amu, 48.00 amu, a

Morgarella [4.7K]

Answer : The percent abundance of the heaviest isotope is, 78 %

Explanation :

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:

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

As we are given that,

Average atomic mass = 48.68 amu

Mass of heaviest-weight isotope = 49.00 amu

Let the percentage abundance of heaviest-weight isotope = x %

Fractional abundance of heaviest-weight isotope = $\frac{x}{100}$

Mass of lightest-weight isotope = 47.00 amu

Percentage abundance of lightest-weight isotope = 10 %

Fractional abundance of lightest-weight isotope = $\frac{10}{100}$

Mass of middle-weight isotope = 48.00 amu

Percentage abundance of middle-weight isotope = [100 - (x + 10)] % = (90 - x) %

Fractional abundance of middle-weight isotope = $\frac{(90-x)}{100}$

Now put all the given values in above formula, we get:

$48.68=[(47.0\times \frac{10}{100})+(48.0\times \frac{(90-x)}{100})+(49.0\times \frac{x}{100})]$

$x=78\%$

Therefore, the percent abundance of the heaviest isotope is, 78 %

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3 years ago

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Will a horse galloping in a field produce and average velocity of zero

motikmotik

Answer:

Explanation:

Depending on the mass of the horse and the speed, velocity will change.

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3 years ago

Which electron configuration is impossible?

Verizon [17]

Answer:

MP hippopotamus

Explanation: I'm in the fifth grade so yeah I really don't know this so I'm just going to say some random stuff and white cheddar mac and cheese warm TV perfect back MD 11443 to 2885 eleven 12:20 to 11 132 0.24 answer

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2 years ago

What is the difference between mass number and atomic number

krok68 [10]

Mass number is the number of protons and neutrons in an atom.
Atomic mass is the average mass of all the isotopes of a certain type.

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3 years ago

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