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1 year ago

A process with a negative change in enthalpy and a negative change in entropy will generally be:________

1 answer:

3 0

A process with a negative change in enthalpy and a negative change in entropy will generally be: <u>spontaneous</u>.

<h3>Gibbs free energy:</h3>

Since the Gibbs free energy is a parameter that tells us whether a chemical reaction is spontaneous (Gibbs free energy less than 0) or nonspontaneous (Gibbs free energy greater than 0) in this situation, we can describe it mathematically as:

ΔG = ΔH - TΔS

Therefore, any process with a negative change in enthalpy and a positive change in entropy will be spontaneous. If the enthalpy and the entropy are both negative, the subtraction becomes always negative, for which the Gibbs free energy is also negative.

One of the most crucial thermodynamic functions for the characterization of a system is the Gibbs free energy. It influences results like the voltage of an electrochemical cell and the equilibrium constant for a reversible reaction, among others.

Learn more about spontaneous here:

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FM radio stations use different frequencies. For

Ratling [72]

Answer:

89.5 Hz

Explanation:

The relationship between the frequency and the wavelength is given by the following formula:

$\lambda = \frac{c}{f}\\\\$

where,

f = frequency

c = speed of light

λ = wavelength

Since the speed of light is constant. Therefore the formula suggests an inverse relationship between the frequency and the wavelength. Hence, the station with the lowest frequency will have the longest wavelength.

Therefore, the answer is:

8 0

3 years ago

Descriptive investigations involve collecting data about a system, but not making observations .

Angelina_Jolie [31]

The correct statement should be: Descriptive investigations involve collecting data about a system, but not making comparisons.
so i believe the statement above is false

In descriptive investigations, we shall not make any hypothesis for the situation and we just need to fully record all obeservations.
By doing this, we could fully analyze the variables without comparing and manipulating it.

4 0

3 years ago

Read 2 more answers

A meterologist made these observations one day:

Vinvika [58]

Answer:

They transfered more energy in the morning.

Explanation:

This is because, let me put this in simple words, you have more energy, you can run more laps around the track, right? This is the same with the waves. They have more energy, so they can crash aganst the shore more!

3 0

3 years ago

g HW 5.6.The Moon and the Earth both orbit the center of mass of the Earth-Moon system.Earth is 81 times more massive than the M

Law Incorporation [45]

Answer:

$R_{cm}$ = 4.688 106 m

Explanation:

The expression for the center of mass is

R cm = 1 / M ∑ $r_{i}$ $m_{i}$

Where M is the total mass of the system, ri and m1 are the distance and mass of each particle from a defined origin

Let's look for the total mass, the mass of the moon is m and that of the earth Me

M = $M_{e}$ + m

M = 81m + m

M = 82 m

The distance from the earth to the moon is R = 384.4 106 m

$R_{cm}$ = 1 / M (M R1 + m R)

$R_{cm}$ = 1 / 82m (0 + m R)

$R_{cm}$ = R / 82

$R_{cm}$ = 384.4 106/82

$R_{cm}$ = 4.688 106 m

The radius of the earth is

$R_{e}$ = 6371 103 m

$R_{e}$ = 6.371 106 m

We can see that the center of mass of the system is within the beating radius

6 0

3 years ago

A batter swings at a baseball. The action force is the bat hitting the ball with a force of 5N. What is the reaction force?

stepan [7]

According to Newtons third law the force of action has an equal and opposite reaction. So if the force of the bat hitting the ball is equal to 5 N, then reaction force of the ball has to be 5 N as well. So the correct answer is: the reaction force is equal to 5 N.

8 0

3 years ago