Please help with this chem question I’ll mark you brainiest. The answer isn’t A) I already tried that option.

Answer:

Crude oil is separated by fractional distillation. Crude oil is heated to vaporize the different hydrocarbons in a tank which is cool at the top and hot at the bottom. The vapours then rise and the different hydrocarbons condense at their specific boiling points, allowing them to be separated.

Answer:

Leucippus and Democritus

Explanation:

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Explanation: Plants using photosynthesis will take in carbon dioxide from the air, bring up water from the roots, and use sunlight as the energetic source to create sugar from water and carbon dioxide. Plants contain a molecule called chlorophyll, and the chlorophyll is what absorbs the sunlight

Answer:

both are eukaryotic

Explanation:

both has nucleus so

Answer: According to Kinetic Molecular Theory, an increase in temperature will increase the average kinetic energy of the molecules. As the particles move faster, they will likely hit the edge of the container more often.

Answer:According to Kinetic Molecular Theory, an increase in temperature will increase the average kinetic energy of the molecules. As the particles move faster, they will likely hit the edge of the container more often.

Explanation:

Answer: X is an Esther

Explanation: alcohol and carboxylate acid forms esters

When a carboxylic acid and alcohol react then-new substance is produced from esterification and hence is called an ester. Thus, option 2 is correct.

Esterification is the process to make esters from carboxylic acids and alcohol in the presence of an acid catalyst (dry sulphuric acid). The -COOH group of the carboxylic acids contributes to the formation of the esters.

The esterification reactions are reversible reactions and occur at a slower pace. The reaction between an acid and alcohol is shown as:

Butanoic acid + 1-pentanol (catalyst) →  water + ester

Therefore, option 2. ester is produced.

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Answer:

hydrogen and cloride + hydrogen

Answer: 80 degrees F

Explanation:

Answer:

B

Explanation:

Answer:

the answer is "a" took the test

Explanation:

Answer:

Because carbohydrates are energy

Explanation:

Carbohydrates is best best nutrient for energy, turning into energy as soon as they are eaten. A rickshaw puller most likely needs quite a bit of energy to pedal all day without getting tired, so that's why they eat a carbohydrate rich diet.

Answer: B- a roll of photographic film

Explanation:

Founders education answer

Explanation: Sulphur trioxide forms Sulphur acid with water.

Phosphorus has unpaired electrons in 3p state

Answer:

Natural resources are naturally formed of course(wood copper fruits) and they are not distributed evenly due to competition of getting them and the prices of the resources

Explanation:

Answer:

but were is the answer

Explanation:

i am so confuesed

Answer: A heat energy of 50160 joules are required to heat 15 grams of ice from [tex]-200^{o}C[/tex] to [tex]1400^{o}C[/tex].

Explanation:

Given : mass of ice = 15 g

Convert grams into kg as follows,

[tex]1 g = 0.001 kg\\15 g = 15 g \times \frac{0.001 kg}{1 g}\\= 0.015 kg[/tex]

Initial temperature = [tex]-200^{o}C[/tex]

Final temperature = [tex]1400^{o}C[/tex]

Formula used to calculate the amount of heat energy is as follows.

[tex]q = m \times C \times (T_{2} - T_{1})[/tex]

where,

q = heat energy

m = mass of substance

C = specific heat of substance (ice here has C = [tex]2090 J/kg ^{o}C[/tex])

[tex]T_{1}[/tex] = initial temperature

[tex]T_{2}[/tex] = final temperature

Substitute the values into above formula as follows.

[tex]q = m \times C \times (T_{2} - T_{1})\\= 0.015 kg \times 2090 J/kg^{o}C \times [1400 - (-200)]^{o}C\\= 50160 J[/tex]

Thus, we can conclude that 50160 joules are required to heat 15 grams of ice from [tex]-200^{o}C[/tex] to [tex]1400^{o}C[/tex].

Answer:

The correct answer is - potassium.

Explanation:

Electron configuration is the representation of the distribution or arrangement of electrons in orbital shells and subshells of a particular atom. IN this question the given electron configuration is -

1s^22s^22p^63s^23p^64s^1

By the configuration, it is clear that it belongs to

- the s group as the last electron is n s orbital and

- only 1 electron which means it belongs to group 1 in the periodic table

- last orbital is 4 so it is from the 4th period

- total electron = 19

Thus, the correct answer is - Potassium or K.

Answer:

Mg⁺² = 0.525 mol/L

Cl⁻ = 1.05 mol/L

Explanation:

The formula for magnesium chloride is MgCl₂, and in a solution the following process takes place:

By analyzing the stoichiometric coefficients, we can tell that the concentration of Mg⁺² ions is the same as the concentration of MgCl₂, while the Cl⁻ concentration is twice that value.

In other words:

Answer:

The energy possessed by a body by the virtue of its position is called potential energy.

Answer:

n = 1.15 mol

Explanation:

C = n/ V

n= C×V

n= 2.3× 0.5

n = 1.15 mol

Answer:

Cellulose is a made up of thousands of D-glucose subunits. The glucose subunits in cellulose are linked via beta 1-4 glycosidic bonds.

Answer:

The capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, etc.

Heavy rain fall most commonly causes shoals to form or change shape making depressions and bars in the sand.

Wave shoaling occurs when surface waves slow down, their wave height rises, and the space between waves narrows as they approach shallow water, like a beach. The waves are said to shoal because of this action, which is known as shoaling.

The shoal, a buildup of silt that might be hazardous to ships in a river channel or on a continental shelf.

Conventionally, it is assumed that the continental shelf is less than 10 metres below sea level at low tide. Shoals are created mostly by the same processes that result in offshore bars.

Thus, Heavy rain fall causes shoals to produce and change shape creating depressions and bars in the sand.

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Respuesta:

2400 mL

Explicación:

Paso 1: Información dada

Paso 2: Calcular el volumen de naranja

La concentración de naranja es de 20 % v/v, es decir, cada 100 mL de solución hay 20 mL de naranja.

3000 mL Sol × 20 mL Naranja/100 mL Solución = 600 mL Naranja

Paso 3: Calcular el volumn de agua

El volumen de soluciónes igual a la suma de los volúmenes de naranja y agua.

VSolución = VNaranja + VAgua

VAgua = VSolución - VNaranja

VAgua = 3000 mL - 600 mL = 2400 mL

Answer: CH4 + 1,5 O2 ⇒ CO + 2 H2O, then multiply numbers by 2

Explanation:

Answer:

35

Explanation:

mass number = protons in the nucleus + neutrons in the nucleus

17 + 18 = 35, the mass number

Protons and neutrons are together known as nucleons.

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