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masya89 [10]
3 years ago
11

Which statement is true about the force of gravity? It is a force of attraction. It depends on temperature. It is affected by pr

essure. It rarely exists between objects.
Chemistry
2 answers:
vagabundo [1.1K]3 years ago
8 0

Answer: Option (a) is the correct answer.

Explanation:

Force of gravity is defined as the force which can attract any object along with its mass.

For example, an apple falling from a tree on the ground represents that force of gravity has pulled the apple towards the ground along with its mass.

Thus, we can conclude that out of the given options, it is a force of attraction is true about the force of gravity.

Otrada [13]3 years ago
7 0

<u>Answer: </u>The correct answer is that it is a force of attraction.

<u>Explanation:</u>

Force of gravity is defined as the force that attracts any two objects having mass. It is directly proportional to the product of the two masses and is inversely proportional to the square of the distance between the two masses.

Mathematically,

F\propto m_1m_2\\\\F\propto \frac{1}{r^2}

Combining the two equation and removing the proportionality sign, we get:

F=\frac{Gm_1m_2}{r^2}

where, G is the universal gravitational constant

m_1\text{ and }m_2 are the masses of the two objects

r is the distance between the two objects.

This force is not affected by temperature and pressure.

Hence, the correct answer is that it is a force of attraction.

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puteri [66]

The partial pressure of the N2H4 gas  is 1.50 atm.

<h3>Dalton's law of partial pressure</h3>

From the Dalton's law of partial pressure, the total pressure of a mixture of gases is the sum of the individual partial pressures of all the gases present in the mixture.

We have the following;

C2H2F4  =  3.00 atm

N2H4 = c

Total pressure = 3.00 atm + 1.50 atm = 4.50 atm

Hence, the partial pressure of the N2H4  is N2H4.

Learn more about partial pressure: brainly.com/question/14623719

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2 years ago
Ionic character of lih
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4 years ago
Calculate the value of the diffusion coefficient D (in m2/s) at 547°C for the diffusion of some species in a metal; assume that
svetlana [45]

Answer : The value of diffusion coefficient is, 2.97\times 10^{-16}m^2/s

Explanation :

Formula used :

D=D_o\times \exp \left(-\frac{Q_d}{RT}\right )

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D = diffusion coefficient = ?

D_o = 5.6\times 10^{-5}m^2/s

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Now put all the given values in the above formula, we get:

D=5.6\times 10^{-5}m^2/s\times \exp \left(-\frac{177kJ/mol}{(8.314J/mol.K)\times (820K)}\right )

D=2.97\times 10^{-16}m^2/s

Thus, the value of diffusion coefficient is, 2.97\times 10^{-16}m^2/s

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Answer:

See explanation and image attached

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6 0
3 years ago
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