All categories

1 year ago

Which reaction displays an example of an Arrhenius base?

2 answers:

6 0

An Arrhenius base is a substance that, when dissolved in an aqueous solution, increases the concentration of hydroxide, or OH-, ions in the solution. I believe the correct answer from the choices listed above is option A. The reaction that displays an example of an Arrhenius base would be NaOH(s) --> Na+(aq) + OH–(aq). Hope this answers the question.

Katena32 [7]1 year ago

6 0

Answer:

answer is option A

Explanation:

just took the test and got it right

You might be interested in

Give an example of a rule of the natural world that a scientist can assume is always true.

vaieri [72.5K]

Answer:

Laws of Nature are to be distinguished both from Scientific Laws and from Natural Laws. On the other account, the Necessitarian Theory, Laws of Nature are the principles which govern the natural phenomena of the world. That is, the natural world “obeys” the Laws of Nature.

4 0

1 year ago

A flask of fixed volume contains 1.0 mole of gaseous carbon dioxide and 88 g of solid carbon dioxide. The original pressure and

lianna [129]

Answer:

The correct option is: C. 250 K

Explanation:

Given: Before Sublimation-

Initial Temperature: T₁ = 300 K, Initial Pressure: P₁ = 1 atm, Initial number of moles of gas: n₁ = 1 mol, given mass of solid Carbon dioxide: w = 88 g

After Sublimation-

Final Pressure: P₂ = 2.5 atm, Final number of moles of gas: n₂ = ? mol

Final Temperature: T₂ = ? K,

Also, Volume is constant, Molar mass of Carbon dioxide: m = 44 g/mol

As we know,

The number of moles:

$n = \frac {given\: mass\: (w)} {Molar\: mass\: (m)}$

So the number of moles of carbon dioxide sublimed:

$n = \frac {w}{m} = \frac {88\: g} {44\: g/mol} = 2 mol$

Therefore, the final number of moles of gas after sublimation:

$n_{2} = n_{1} + n = 1\: mol + 2\: mol = 3\: mol$

According to the Ideal gas equation:

$P.V = n.R.T$

$or, \frac {P_{1}.V_{1}}{n_{1}.T_{1}} = \frac {P_{2}.V_{2}}{n_{2}.T_{2}} \: \: \: \: \: \: ....equation\: (1)$

Since the volume is constant, so the equation (1) can be written as:

$\frac {P_{1}}{n_{1}.T_{1}} = \frac {P_{2}}{n_{2}.T_{2}}$

$\Rightarrow \frac {1\:atm}{1\:mol \times 300\:K} = \frac {2.5\:atm}{3\:mol \times T_{2}}$

$\therefore T_{2} = \frac {2.5\:atm \times 300\:K \times 1\:mol}{3\:mol \times 1\:atm}$

$\Rightarrow T_{2} = 250\:K$

Therefore, the final temperature: T₂ = 250 K

6 0

2 years ago

describe the energy inputs and outputs for the campfire. Use the law of conservation of energy to construct a valid qualitative

-Dominant- [34]

Answer:

The essence including its particular subject is outlined in the following portion mostly on clarification.

Explanation:

The energy throughout the campfire comes from either the wood's latent chemical energy until it has been burned to steam up and launch up across the campfire. The electricity generation for something like a campfire seems to be in the context including its potential chemical energy which is contained throughout the firewood used only to inflame the situation.
The energy output seems to be in the different types of heat energy radiating across the campfire, laser light generated off by the blaze, and perhaps a little number of electrical waves, registered throughout the firewood cracking whilst they combust throughout the blaze.

and,

chemical energy ⇒ heat energy + light energy + sound energy

6 0

1 year ago

A vessel contains Ar(g) at a high pressure. Which of the following statements best helps to explain why the measured pressure is

Luda [366]

Answer:

4. The combined volume of the Ar atoms is too large to be negligible compared with the total volume of the container.

Explanation:

Deviations from ideality are due to intermolecular forces and to the nonzero volume of the molecules themselves. At infinite volume, the volume of the molecules themselves is negligible compared with the infinite volume the gas occupies.

However, the volume occupied by the gas molecules must be taken into account. Each molecule does occupy a finite, although small, intrinsic volume.

The non-zero volume of the molecules implies that instead of moving in a given volume V they are limited to doing so in a smaller volume. Thus, the molecules will be closer to each other and repulsive forces will dominate, resulting in greater pressure than the one calculated with the ideal gas law, that means, without considering the volume occupied by the molecules.

5 0

2 years ago

If charges flow very slowly through a metal, why does it not require several hours for a light to come on when you throw a switc

Harlamova29_29 [7]

The charges themselves may not move fast, but the force upon them does. The electric field set up by the battery or generator propagates through the wires at the speed of light.

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

6 0

2 years ago