Given 16.2 grams of substance Y, if the substance absorbs 2722 joules of energy and the specific heat of the substance is 9.22 J/g·°C, what is the final temperature of the substance if the initial was 26 degrees Celsius?

Answers

Answer 1

Answer: Since the substance absorbs heat, it is expected that the temperature will rise. The formula for the internal energy of a substance is given by the equation:

ΔU = mCpΔT

where:

ΔU = internal energy
m = mass of substance
Cp = specific heat capacity of substance
ΔT = change in temperature

ΔU = 2722 Joules = 16.2 grams (9.22 J/g-°C) (Tf - 26°C)

This gives a final temperature of Tf = 44.22 °C

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If the pressure P applied to a gas is increased while the gas is held at a constant temperature, then the volume V of the gas will decrease. The rate of change of the volume of gas with respect to the pressure is proportional to the reciprocal of the square of the pressure. Which of the following is a differential equation that could describe this relationship?

Answers

The differential relationship has been $\rm \bold{(dV)/(dP)\;=\;(C)/(P^2)}$ .

The gas has been termed to be the ideal gas. For an ideal gas at a constant temperature, the relationship of the change in pressure and volume can be given as constant. The relationship has been given with the application of Boyle's law.

The product of the pressure and volume has been a constant quantity for a reaction.

Pressure $*$ Volume = Constant

PV = C

V = $\rm (C)/(P)$

Differentiating the equation:

$\rm (dV)/(dt)\;=\;(C)/(P^2)\;(dP)/(dt)$

$\rm (dV)/(dt)\;*\;(dt)/(dP)\;=\;(C)/(P^2)$

$\rm (dV)/(dP)\;=\;(C)/(P^2)$

The differential relationship has been $\rm \bold{(dV)/(dP)\;=\;(C)/(P^2)}$ .

For more information about pressure at a constant temperature, refer to the link:

brainly.com/question/12152879?

Answer:

A differential equation that could describe the relationship of the rate of change of the volume of gas with respect to the pressure is;

V' = $-(C)/(P^2)$ .

Explanation:

Boyle's law states that at constant temperature, the pressure of a given mass of gas is inversely proportional to its volume.

That is;

P₁×V₁ = P₂×V₂ or

P×V = Constant, C

That is V = $(C)/(P)$

Therefore, the rate of change of volume of a gas is given as

$(dV)/(dt) = -(C)/(P^2) (dP)/(dt)$ which gives

$(dV)/(dt) * (dt)/(dP)= (dV)/(dP) = -(C)/(P^2)$

That is the rate of change of the volume of gas with respect to the pressure is proportional to the reciprocal of the square of the pressure.

$(dV)/(dP) = -(C)/(P^2)$ .

V' = $-(C)/(P^2)$ .

Draw and name all the isomers of the alkene C4H8

Answers

....H....H....H....H
....|.....|…..|…..|
H-C==C----C----C-H
.....….....…..|.....|
.................H.....H
butan-1-ene/butene/but-1-ene

....H....H....H....H
....|.....|…..|…..|
H-C----C==C----C-H
....|….....…........|
....H..................H
butan-2-ene/but-2-ene
These are the structural isomers of butene.The geometric isomers include trans-but-2-ene and cis-but-2-ene.
HOPE THIS HELPS *WINK*

How does the degree of disorder of a gas compare to that of a liquid or a solid? please explain your answer. this is a chemistry home work.

Answers

Molecules of gases are spaced far apart from each other compared to liquids and solids. This results in greater disorder in gas molecules. Liquid molecules are spaced slightly closer together than gas molecules, so the disorder is less than gas molecules. Solid molecules are the most tightly packed, and often vibrate in position. This gives solid molecules the least disorder.

As the pressure on the surface of a liquid decreases, the temperature at which the liquid will boil(1) decreases
(2) increases
(3) remains the same

Answers

Answer: option (1) decreases.

Explanation:

May be you have experienced that: when you go to the beach, where the atmposhpere pressure is greater than the atmosphere pressure in places that are at higher altitudes, the water takes longer to boil. That is because the boiling temperature is greater, and you need more total heat (more time) to permit the liquid to reach that temperature.

The reason why that happens is because substances boil when the vapor pressure (the pressure of the particles of vapor over the liquid) equals the atmosphere pressure. So, when the atmposhere pressure increases, the temperature at which the vapor pressure reaches the atmosphere pressure also increases, and when the atmosphere pressure decreases, the temperature at which the vapor pressure reaches the atmosphere pressure decreases.

As the pressure on the surface of a liquid decreases, the temperature at which the liquid will boil(1) decrease.

Use the mole concept to calculate the number of atoms that are in a 1.75-mol sample of CHCl3.

Answers

This is how I got to that answer. Since we don't know how many atoms there are in a mole, we use the number 6.02 x 10^-23. Now, just plug in what you have in the equation:

1.75 moles ChCl3 x (6.02 x 10 ^-23) / 1 mole = 1.0535 x 10^-22 atoms.

How many molecules are there in 4.00 moles of glucose

Answers

i got 20.88 x 10^23 to be the answer

Final answer:

The total amount of energy in the cooler remains the same. The warm soda transfers its heat energy to the ice, causing the soda to cool and the ice to melt. The cooler, soda, and water from the melted ice eventually reach a thermal equilibrium where they have the same temperature.

Explanation:

In the scenario where a student puts a warm can of soda in a cooler filled with ice, the amount of thermal energy in the cooler's system changes due to the process of heat transfer. This process follows the second law of thermodynamics which stipulates that heat tends to flow from hotter objects to colder objects until they reach equilibrium.

In this case, the warmer soda will transfer its heat to the colder ice. During this process, the ice will absorb the heat without a rise in temperature until all of it has melted. This is because this absorbed energy is used to break the bonds holding the ice molecules together in a solid state, causing a phase change to liquid water.

Simultaneously, the soda can's temperature drops as it loses heat to the ice. Eventually, everything in the cooler—the soda, the melted ice water, and the air within—will reach the same temperature, marking the achievement of thermal equilibrium. Therefore, the total amount of energy in the cooler remains the same, it's just transferred (not lost or gained). The energy initially within the can of soda is transferred to the ice, and the overall rise in the cooler’s temperature represent this energy transfer.

Learn more about Heat Transfer here:

brainly.com/question/13433948

#SPJ3

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