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3 years ago

Which is an example of the kinetic-molecular theory not holding true for a gas?

Chemistry

2 answers:

lyudmila [28]3 years ago

7 0

C; The attraction between particles causes a gas to condense at low temperatures.

Marina86 [1]3 years ago

3 0

Answer: C. The attraction between particles causes a gas to condense at low temperatures

Explanation: The Kinetic Molecular Theory explains that the gas are in constant motion and collide with each other and with the walls of the container.

The average kinetic energy of the particles depends only on the temperature.

Speed is directly proportional to the square root of the temperature.

As already mentioned second option also satisfies the theory that the particles in a gas travel in straight lines in a continuous, random motion.

The particles in a gas make up a small portion of the total volume of the gas. This option also correctly fits for the theory.

But option c is not correct.

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What is hydrogen ?,,,

ASHA 777 [7]

Answer:

Hydrogen is the lightest element in the periodic table. Hydrogen is a gas of diatomic molecules and is colorless, odorless, non-toxic, and highly combustible. It is the most abundant chemical substance in the universe as it constitutes roughly 75% of all normal matter.

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3 years ago

Read 2 more answers

Predict the major product of the following reaction of 1-methylcyclohexene with dilute HCl in H2O?

Scrat [10]

Answer:

1-chloro-1-methylcyclohexane

Explanation:

The hydrocarbons with one double bond are called alkenes and are named with the suffix "ene". The alkenes, such as 1-methylcyclohexene, react better in an addition reaction. The double bond will be broken, and the substitutes will be placed at them.

In the reaction with HCl, H and Cl will be added to the carbons of the broken bond. The major product is formed when H is put at the carbon less substituted. Thus, the product will be the one given below, 1-chloro-1-methylcyclohexane.

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3 years ago

When 0.5141 g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 25.823 °C to 29.419 °C

natka813 [3]

Answer:

$\Delta_{r}U$ of the reaction is -6313 kJ/mol

$\Delta_{r}H$ of the reaction is -6312 kJ/mol

Explanation:

$Temperature\,\,change= \Delta U = 29.419-25.823 =3.506^{o}C$

$q_{cal}= C \times \Delta T$

$=5.861 \times 3.596 = 21.076\,kJ$

$q_{rxn}= -q_{cal}= -21.076\,kJ$

$\Delta_{r}U= -21.076 \times \frac{154}{0.5141}= -6313\, kJ/mol$

Therefore, $\Delta_{r}U$ of the reaction is -6313 kJ/mol.

The chemical reaction in bomb calorimeter is as follows.

$C_{12}H_{10}(s)+\frac{27}{2}O_{2}(g)\rightarrow 12CO_{2}(g)+5H_{2}O(g)$

$Number\,of\,moles\Delta n=(12+5)-\frac{27}{2}=3.5$

$\Delta_{r}H=\Delta E+ \Delta n. RT$

$=-6313+3.5\times 8.314\times 10^{-3} \times 3.596=-6312\,kJ/mol$

Therefore, $\Delta_{r}H$ of the reaction is -6312 kJ/mol.

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3 years ago

See if you can think of a way to prove that it is the oxygen in air, not nitrogen, that causes rusting.

allsm [11]

Answer:

rusting occur in oxygen and water coz when you put a nail into the water and you leave it three days you will the nail become brownish and that is due to oxygen and water

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If hershey and chase had used radioactive oxygen in their experiments instead of phosphorus and sulfur, what results would they

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