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3 years ago

Which substance is a primary source of hydrocarbons?

Chemistry

2 answers:

mixer [17]3 years ago

7 0

The answer is: C. Petroleum.

Petroleum consists of hydrocarbons with between four and twenty carbon atoms.

Petroleum is a mixture of many different hydrocarbons: alkanes (paraffins), cycloalkanes and alkenes (olefins).

Petroleum is used primarily as a fuel in combustion engines.

Most motor oils are made from a heavier, thicker petroleum hydrocarbons.

masya89 [10]3 years ago

6 0

Answer:

for plato users its C. Petroleum.

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Can someone please help me with this question also explain the answers I am so confused thank you.

Archy [21]

The theoretical yield of H₂S is 13.5 g.

The percent yield is 75.5 %.

<h3>What is the theoretical yield of H₂S from the reaction?</h3>

The equation of the reaction is given below:

FeS + 2 HCl → FeCl₂+ H₂S

Moles of FeS reacting = mass/molar mass

Molar mass of FeS = 88 g/mol

Moles of FeS reacting = 35/88 = 0.398 moles

Moles of H₂S produced = 0.398 moles

Molar mass of H₂S = 34 g/mol

Mass of H₂S produced = 0.398 * 34 = 13.5 g

Theoretical yield of H₂S is 13.5 g.

Percent yield = actual yield/theoretical yield * 100%

Actual yield of H₂S = 10.2 g

Percent yield = 10.2/13.5 * 100%

Percent yield = 75.5 %

In conclusion, the actual yield is less than the theoretical yield.

Learn more about percent yield at: brainly.com/question/8638404

#SPJ1

4 0

2 years ago

21.6 J of energy are used to heat a 2.0 g piece of iron from 5.0oC to 29.0oC. What is the experimental specific heat capacity of

vesna_86 [32]

Answer: 0.45 J / g °C

Explanation: solution attached.

Heat is equal to the product of mass, specific heat and change in temperature.

Q= mc∆T

Derive the equation to find c

c = Q / m∆T substitute the values

c = 21.6 J / 2.0g ( 24°C - 5°C)

c = 0.45 J / g ° C

4 0

3 years ago

A pure substance is made up of several types of atoms <br><br> true or false

TiliK225 [7]

Answer: false

Explanation: Reason being A substance cannot be a gas or a mixture, only can a pure substance that occurs in nature may

8 0

3 years ago

What element is this?

LiRa [457]

i think helium hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

8 0

4 years ago

What is the volume of an oxygen tank if it contains 12 moles of oxygen at 273 K under 75 kPa?

Zina [86]

Given:
n = 12 moles of oxygen
T = 273 K, temperature
p = 75 kPa, pressure

Use the ideal gas law, given by
$pV=nRT \\ or \\ V= \frac{nRT}{p}$
where
V = volume
R = 8.3145 J/(mol-K), the gas constant

Therefore,
$V= \frac{(12\,mol)(8.3145\, \frac{J}{mol-K} )(273\,K)}{75 \times 10^{3} \, Pa}= 0.3632\,m^{3}$

Answer: 0.363 m³

5 0

4 years ago