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antoniya [11.8K]
3 years ago
9

What happens when two objects when they are brought closer together The mass of both objects decrease The mass of both objects i

ncrease The gravitational force between them decreases The gravitational force between them increases
Chemistry
1 answer:
Maurinko [17]3 years ago
8 0

Answer:

The correct option is

The gravitational force between them increases

Explanation:

According to Newton's law of universal gravitation states that the force of attraction between two bodies is directly proportional to the product of the masses of the bodies and inversely proportional to the square of the distance of their centers from each other.

The formula for universal gravitation is given as follows;

F_{1} = F_{2} =G \times \dfrac{m_{1}  \times m_{2}}{r^{2}}

Where;

F₁, and F₂ = The gravitational forces of attraction on each mass

G = The gravitational constant

m₁ = The mass of one body

m₂ = The mass of the body

r = The distance between the centers of the two bodies

Therefore, the gravitational force of attraction on each object is inversely proportional to the as the distance between the centers of the two bodies

When the distance between the centers of the two bodies decreases, the two objects are brought closer together, the gravitational force of attraction between them increases.

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Calcium metal reacts with water to form calcium hydroxide and hydrogen gas. How much hydrogen is formed when 0.50 g of calcium a
olga55 [171]

Answer:

0.025g

Explanation:

Firstly, we need to write a balanced chemical equation.

Ca + 2H2O —-> Ca(OH)2 + H2

From the chemical equation, we can see that one mole of calcium metal yielded one mole of hydrogen gas.

Now, we need to know the actual number of moles of hydrogen gas given off.

The number of moles is the mass divided by the atomic mass. The atomic mass of calcium is 40g/mol. The number of moles is thus 0.5/40 = 0.0125 mole

Since the mole ratio is 1:1, the number of moles of hydrogen gas produced too is 0.0125 moles.

We now Proceed to get the mass of the hydrogen gas produced. This is the number of moles of hydrogen multiplied by the molar mass of the diatomic hydrogen gas. The molar mass of the diatomic hydrogen gas is 2g/mol.

The amount given off is thus 2 * 0.0125 = 0.025g

6 0
4 years ago
A chemist has 3.55x1022 molecules of nitrogen monoxide. How
Alina [70]

Answer:

<h2>0.059 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{3.55 \times  {10}^{22} }{6.02 \times  {10}^{23} }  \\  = 0.05897...

We have the final answer as

<h3>0.059 moles</h3>

Hope this helps you

6 0
3 years ago
What is the correct formula for Triphosphorous hexachloride?
zlopas [31]

Answer:

P3

Explanation:

Im pretty sure hope this helps

5 0
2 years ago
6.285×10^3 mg = _____? _____ kg
TiliK225 [7]
One kilogram is equal to one thousand grams. Further, one gram is equal to 1000 mg. The conversion is as shown below,
                    (6.285 x 10³ mg) x (1 g / 1000 mg) x (1 kg / 1000 g)
The numerical value of the operation above is 0.006285 kg. 
6 0
4 years ago
Read 2 more answers
If an atom were the size of a baseball, its nucleus would be about the size of a(n) walnut. raisin. atom. flea.
jeka94
Your answer would be Flea
6 0
2 years ago
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