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3 years ago

Which hydrocarbons are present in styrene? a) alkene b) alkyne c) none of the above?

Chemistry

1 answer:

sleet_krkn [62]3 years ago

6 0

Option a: alkene

Styren is C6H5CH=CH2, i.e. ethenylbenzene

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A sample of a substance containing only magnesium and chlorine was tested in the lab and was found to be composed of 74.5% chlor

chubhunter [2.5K]

Use a ratio to find out that x/190.2 = 74.5/100

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2 years ago

What is the preasure in atmospheres of 20 mol of nitrogen gas in 36.2 L cylinder at 25 degrees C?

Savatey [412]

Answer:

P = 13.5 atm

Explanation:

Given that

No. of moles, n = 20 moles

Volume of nitrogen gas = 36.2 L

Temperature = 25°C = 298 K

We need to find the pressure of the gas. Using the ideal gas equation

PV = nRT

Where

R is gas constant, $R=0.082057\ L-atm/K-mol$

So,

$P=\dfrac{nRT}{V}\\\\P=\dfrac{20\times 0.082057\times 298}{36.2 }\\\\P=13.5\ atm$

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2 years ago

All substances taking part in a certain interaction are shown below: Butane is written followed by an addition sign followed by

OverLord2011 [107]

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3 0

3 years ago

Read 2 more answers

The tools shown in the diagram are used for gardening Each tool is made up

postnew [5]

Answer:

Explanation:

The longer handles distribute the force across a longer distance.

7 0

2 years ago

How many Joules of heat would be required

mote1985 [20]

Heat would be required : 1,670 J

<h3>Further explanation</h3>

Given

mass of H₂O=5 g

Required

Heat to melt

Solution

The heat to change the phase can be formulated :

Q = m.Lf (melting/freezing)

Lf=latent heat of fusion

The heat of fusion for water at 0 °C : 334 J/g

Input given values in formula :

$\tt Q=5\times 334=\boxed{\bold{1,670~J}}$

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2 years ago