Which of the following has kinetic energy?

Answer:

c) Electrons are unequally shared

Answer:

-8024.832 J

Explanation:

The amount of heat energy lost or released, Q, can be calculated thus;

Q = m × c × ∆T

Where;

Q = amount of heat lost (J)

m = mass of substance (g)

c = specific heat capacity (J/g°C)

∆T = change in temperature (°C)

According to this question,

Q = ?

m = 24.3 g

c of Gold = 0.129 J/g°C

∆T = 20°C - 2580.0°C = -2560°C

Using Q = m × c × ∆T

Q = 24.3 × 0.129 × -2560°C

Q = -8024.832 J

This means that 8024.832 J of energy is lost or released.

Answer:

im pretty sure its d

Explanation:

Answer:When trying to concentrate the solution by evaporation to produce waterless sulfurous acid it will decompose

Explanation:

Explanation:

here's the answer to your question

Answer:

Okay, I think I may actually have an answer for you. I would go with C, "The number of particles able to undergo a chemical reaction is less than the number that is not able to."

Explanation:

I just took a quiz with a similar question, and B is the only gas particle that is able to react. This cancels out all the other answers, as A and B are obviously incorrect based on that information, and it rules out D because T1 is the only sample with a particle able to react. I hope this helps!

Answer:

C is the right answer

Explanation:

Answer:

negative

Explanation:

Opposite charges attract. Therefore the partial positive charge will be attracted to the partial negative charge

Answer: The equilibrium constant for the reaction is 54.47

Explanation:

The equilibrium constant is defined as the ratio of the concentration of products to the concentration of reactants raised to the power of the stoichiometric coefficient of each. It is represented by the term [tex]K_{eq}[/tex]

The given chemical equation follows:

[tex]H_2+I_2\rightleftharpoons 2HI[/tex]

The expression for equilibrium constant will be:

[tex]K_{eq}=\frac{[HI]^2}{[H_2][I_2]}[/tex]

We are given:

[tex][HI]_{eq}=1.3544\times 10^{-2}M[/tex]

[tex][H_2]_{eq}=4.5647\times 10^{-3}M[/tex]

[tex][I_2]_{eq}=7.378\times 10^{-4}M[/tex]

Putting values in above expression, we get:

[tex]K_{eq}=\frac{(1.3544\times 10^{-2})^2}{(4.5647\times 10^{-3})(7.378\times 10^{-4})}\\\\K_{eq}=54.47[/tex]

Hence, the equilibrium constant for the reaction is 54.47

Answer: The mass of water produced is 27 g

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex] ......(1)

Given mass of pentane = 18 g

Molar mass of pentane = 72.15 g/mol

Plugging values in equation 1:

[tex]\text{Moles of pentane}=\frac{18g}{72.15g/mol}=0.250 mol[/tex]

The given chemical equation follows:

[tex]C_5H_{12}+8O_2\rightarrow 5CO_2+6H_2O[/tex]

By the stoichiometry of the reaction:

If 1 mole of pentane produces 6 moles of water

So, 0.250 moles of pentane will produce = [tex]\frac{6}{1}\times 0.250=1.5mol[/tex] of water

Molar mass of water = 18 g/mol

Plugging values in equation 1:

[tex]\text{Mass of water}=(1.5mol\times 18g/mol)=27g[/tex]

Hence, the mass of water produced is 27 g

Answer:

125 ohms

Explanation:

since they're parallel we do

1/total resistance = (1/250 ohms) + (1/250 ohms)

then you get 2/250 ohms

then you flip it so it's equal to total resistance/1

250÷2= 125

Answer:

Explanation:

The physical properties of alkenes and alkynes are generally similar to those of alkanes or cycloalkanes with equal numbers of carbon atoms. Alkynes have higher boiling points than alkanes or alkenes, because the electric field of an alkyne, with its increased number of weakly held π electrons, is more easily distorted, producing stronger attractive forces between molecules.

Answer:

Part A

Given that the graph is symmetrical and bell shaped, the average kinetic energy is given by the midline of graph, which corresponds to the common speed of the highest number of the population

Part B

The formula for the average kinetic energy, K.E. = (3/2)·(R/NA)·T

Therefore, the part of the graph that indicates the temperature of the sample is the average kinetic energy. K.E.

Part C

At a lower temperature, the heat is less evenly distributed and we have the distribution T2 higher than T1

Please see the attached graph created with MS Visio

Explanation:

Answer:

The distilled water will be boiled faster as it does not contain any non - volatile solute.

- The salty water contains different non - volatile salts in it.

- Due to the presence of these salts, its vapour pressure will be decreased and boiling point will be elevated.

- So, salty water will take more time to boil.

- On the other hand, distilled water does not have any such solute and due to this its vapour pressure will not be affected.

- Hence, it will boil fast than salty water.

Answer:

D. 1x10⁻¹¹ M

Explanation:

For any given aqueous solution the following formula is true:

1x10⁻¹⁴ = [H₃O⁺] * [OH⁻]

1x10⁻¹⁴ is the ion-product constant of water, Kw.

We input the given value of [H₃O⁺]:

1x10⁻¹⁴ = 1x10⁻³ * [OH⁻]

And solve for [OH⁻]:

[OH⁻] = 1x10⁻¹¹ M

Thus the correct answer is option D. 1x10⁻¹¹ M.

Answer:

D. 1x10⁻¹¹ M

Explanation:

I took the test :)

Answer:

The mode of changing from one state of matter into another state and back to the former or original state is called change in state of matter .

hope it is helpful to you

Answer:

change in one state from another and back in its own original is known as change in state of matter

Answer:

habitat

Explanation:

wild animal need

Answer:

The second student with mass 70kg has more momentum

Explanation:

Using the formula:

p = m × v

Where;

p = momentum (kgm/s)

m = mass (kg)

v = velocity (m/s)

According to this question, two students are running in a cross country race.

Student 1 has the following; m = 60kg, v = 7m/s

Student 2 has the following; m = 70kg, v = 7m/s

Using p = mv

Student 1, p = 60 × 7 = 420 kgm/s

Student 2, p = 70 × 7 = 490 kgm/s

From the result of the above calculations, student 2 with mass 70kg has more momentum.

Explanation:

there it is fella tried on ma own consciousness

Answer:

Option B . heat is taken in

Answer:

B

Explanation:

we need to eat,drink,and sleep to be healthy

Answer:

B

Explanation:

because polarity of the water molecules is due to the B. deflection of the hydrogen atoms by the lone pair of electrons.

Answer:

B

Explanation:

Answer:

the correct answer is 23:19

Answer:

A magnet

Explanation:

The maximum height of an object, given the initial launch angle and initial velocity is found with:

h = v2 is in2θi 2g

h = v i 2 sin 2 ⁡ θ i 2 g.

Answer:

reproduction, variation in fitness, heredity, variation in individual characters

Answer:

The given molecule is KCN.

Is it a ternary ionic compound?

Explanation:

A ternary ionic compound is one that consists of at least one polyatomic ion/radical.

In the given molecule,

the ions present are:

K+ and CN-.

CN- is a polyatomic acidic radical.

Hence, the given molecule is ternary ionic compound.

63.01284*20=1260.568

Explanation:

Here are the answers for both of the question you send :)

hope this helps you to understand:)