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3 years ago

Which of the following would double the pressure on a contained gas at constant temperature?

Chemistry

1 answer:

astra-53 [7]3 years ago

8 0

Answer: C. doubling the number of particles in the container

Explanation: According to the ideal gas equation:'

$PV=nRT$

P= Pressure of the gas

V= Volume of the gas

n= number of moles

T= Temperature of the gas

R = gas constant

As the gas is contained in a container with fixed volume and temperature is also constant.

$P\propto n$

Therefore, the pressure will double when number of moles or number of particles double.

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Which structural formula does not represent benzene? a hexagon with nothing drawn inside it a hexagon with a dotted circle drawn

boyakko [2]

Answer:
<span>A hexagon with nothing drawn inside it does not represent Benzene.

Explanation:

Below attached picture contains structures mentioned in given option.

Structure of Option-A is shown in Red Color.
</span>
Structure of Option-B is shown in Blue Color.

Structure of Option-C is shown in Green Color.

Structure of Option-D is shown in Orange Color.

Result:
Except Option-A, all structures represent Benzene. Option-A in fact shows the structure of Cyclohexane.

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3 years ago

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Do you use sig figs in percent errors??

leonid [27]

Answer:

I think you use sig figs in percent error.

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2 years ago

Describe an experiment for the preparation and collection of Oxygen sodium peroxide

vitfil [10]

Answer:

Making oxygen

Oxygen can be made from hydrogen peroxide, which decomposes slowly to form water and oxygen:

hydrogen peroxide → water + oxygen

2H2O2(aq) → 2H2O(l) + O2(g)

The rate of reaction can be increased using a catalyst, manganese(IV) oxide. When manganese(IV) oxide is added to hydrogen peroxide, bubbles of oxygen are given off.

Apparatus arranged to measure the volume of gas in a reaction. Reaction mixture is in a flask and gas travels out through a pipe in the top and down into a trough of water. It then bubbles up through a beehive shelf into an upturned glass jar filled with water. The gas collects at the top of the jar, forcing water out into the trough below.

To make oxygen in the laboratory, hydrogen peroxide is poured into a conical flask containing some manganese(IV) oxide. The gas produced is collected in an upside-down gas jar filled with water. As the oxygen collects in the top of the gas jar, it pushes the water out.

Instead of the gas jar and water bath, a gas syringe could be used to collect the oxygen.

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3 years ago

Eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

otez555 [7]

Answer:

<h3>option D</h3>

Explanation:

<h3>Is wire A connected to the light bulb </h3>

<h3>because it is series connection</h3>

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3 years ago

Help me please!! help would be appreciated

valina [46]

I don’t know if this is right but I thing It’s B

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3 years ago

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