Why do we crack molecules?

Answers

Answer 1

Answer:

We need to crack molecules in order for us to get the desired molecule. For example, in the extraction of crude oil, after entering the fractional distillation, it will give products base on their molecular structure. The products are gasoline, diesel fuel, jet fuel, wax, asbestos,kerosene.

Answer 2

Answer: cracking is the process whereby complex organic molecules such as kerogens or long chain hydrocarbons are broken down into simpler molecules such as light hydrocarbons,.
it is done to get more important substances

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Describe the relationship between Avogadro's number and one mole of any substance.
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As the temperature of a sample of matter is increased, what happens to the average kinetic energy of the particles in the sample?A. It decreases. B. It increases. C. It does not change.

Water mixing with carbon dioxide from the air and changing the properties of limestone is an example ofa. chemical weathering.
b. erosion.
c. physical weathering.
d. rock weathering

Answers

It is an example of chemical weathering.
Because the carbon dioxide mixed with the air changes the chemical composition of limestone.

Hope it helps.

The correct answer is A. chemical weathering!

Which description is NOT a characteristic of the nucleus of an atom? a. always contains the same amount of protons and neutrons b. contains uncharged particles c. positively charged d. accounts for most of the atom's mass

Answers

The answer would be A

What is the salt produced when calcium hydroxide, Ca(OH)2, reacts with phosphoric acid, H3PO4, in a neutralization reaction?

Answers

Explanation:

A neutralization reaction is a reaction in which two different compounds combine together and result in the formation of salt and water.

Foe example, $Ca(OH)_(2) + H_(3)PO_(4) \rightarrow Ca_(3)(PO_(4))_(2) + 6H_(2)O$

Therefore, salt of calcium phosphate $Ca_(3)(PO_(4))_(2)$ is formed along with formation of water when compounds $Ca(OH)_(2)$ and $H_(3)PO_(4)$ react together.

$3Ca(OH) _(2) +2H _(3) PO _(4)$ ⇒ $6H _(2) O+Ca _(3)(PO _(4)) _(2)$
Calcium phosphate. Which is your Ca3(PO4)2.

How does thermal energy affect the three states of matter??

Answers

An increase in thermal energy, changes the state of matter from solid to liquid to gas.

a habitat must include all of the following except a. food sources. b. favorable conditions for reproduction. c. more than one population of a given species. d. adequate shelter and/or protection.

Answers

Answer: c. More than one population of a given species.

Explanation:

A habitat is a place or location which provide shelter and other necessary resources desired for survival.

Among the options given more than one population of a given species is correct option. This is because of the fact that if more than one population of species exists there will be competition for resources among the members this will lead to the decline in number of individuals in the populations.

A habitat must include all of the following except C. More than one population of a given species.

Initially, a 55.0 liter compressible container, holding 2.4 moles of a gas, exerts a pressure of 760 millimeters of mercury at a temperature of 280 Kelvin. What is the pressure when the container is compressed to 43.0 liters, the moles of gas reduces to 1.8 moles, and the temperature changes to 36 degrees Celsius?93.7 mm Hg
492 mm Hg
740 mm Hg
805 mm Hg

Answers

Answer:

805 mmHg is the pressure when the container is compressed

Explanation:

Initial Volume of the gas, V = 55.0 L

Initial Moles of the gas, n = 2.4 mol

Initial Pressure of the gas ,P=760 mmHg

initial temperature of the gas, T = 280 K

Using an Ideal gas equation:

$PV=nRT$

$R=(PV)/(nT)$ ...(1)

Final Volume of the gas, V '= 43.0 L

Final Moles of the gas, n' = 1.8 mol

Final Pressure of the gas = p'

Final temperature of the gas, T' =36 °C = 309 K

Using an Ideal gas equation:

$R=(P'V')/(n'T')$ ..(2)

(1)=(2)

$(PV)/(nT)=(P'V')/(n'T')$

$(760 mmHg* 55.0 L)/(2.4 mol* 280 K)=(P'* 43.0 L)/(1.8 mol* 309 K)$

P' = 805 mmHg

805 mmHg is the pressure when the container is compressed.

You would have to use the ideal gas law for this:
PV=nRT
Pressure, Volume, n=moles, R gas constant, Temperature in Kelvin
P=nRT/V
(1.8mol)(62.36)(309K)/43.0L = 805mm Hg

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Will water come to the same temperature of the hot pan?

Which of the following properties of water is due primarily to the uneven distribution of charge between the hydrogen and oxygen atoms?-Its color -Its taste -ability to dissolve ionic substances -ability to produce buoyant forces

If the reaction is at dynamic equilibrium at 500 K, which statement applies to the given chemical system?The forward and reverse reactions no longer occur. The rates of the forward and reverse reactions are unequal. The concentrations of the products and reactants do not change. The forward reaction stops at 500 K.