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3 years ago

Which of the following statements explains the Law of Universal Gravitation?

2 answers:

7 0

The answer is: Objects in the universe attract each other through gravitational force, depending on their masses and distance between the objects. I took a quiz with that question and got it right. Hope it helps :)

Lelu [443]3 years ago

6 0

Answer : The correct option is, Objects in the universe attract each other through gravitational force, depending on their masses and distance between the objects.

Explanation:

Universal law of gravitation : It states that objects in the universe attract each other through the gravitational force, depending on their masses and distance between the objects.

It unit of gravitational force is, N (Newton).

The gravitational force is directly proportional to the masses of the two objects and inversely proportional to the square of the distance between two objects.

Formula used :

$F=G\frac{m_1 m_2}{d^2}$

where,

G = Gravitational constant

F = gravitational force

$m_1$ and $m_2$ = masses of two different objects

d = distance between two objects

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Show how to carry out the transformation of benzene to chlorobenzene by going through a diazonium intermediate.

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Reduction: Reduction of Nitrobenzene yield Aniline.
Diazotization: Diazonium alt of benzene is formed from aniline.
At last diazonium salt is reacted with CuCl to yield chlorobenzene.

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3 years ago

When the pressure and number of particles of a gas are constant, which of the following is also constant

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3 years ago

C2H6O2 is infinitely miscible(soluble) in water. Ethylene glycol is a nonelectrolyte that is used as antifreeze. What is the low

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Answer:

The lowest possible melting point for engine coolant is -12.8°C

Explanation:

This is about colligative property about freezing point depression.

We think the data 30% as a %m/m. It means that 30 g of ethylene glycol are contained in 100 g of solution. Therefore, we have 70 g of solvent.

Formula for freezing point depression is:

ΔT = Kf . m . i

Where ΔT = Freezing T° of pure solvent - Freezing T° of solution.

Freezing T° of solvent = 0° (We talk about water)

Let's determine m (molality, moles of solute in 1kg of solvent)

70 g = 0.070 kg

30 g . 1 mol / 62.07 g = 0.483 moles

0.483 mol / 0.070 kg = 6.90 m

We replace data in formula:

0° - Freezing T° of solution = 1.86 °C/m . 6.90m . 1

As ethylene glycol is a nonelectrolyte, i = 1

Freezing T° of solution = - 12.8°C

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3 years ago

How can one describe the bond between the two atoms of hydrogen to the one atom of oxygen within a molecule of water (h2o)?

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4 years ago