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3 years ago

Why does a planet stay in orbit?

Chemistry

2 answers:

I am Lyosha [343]3 years ago

6 0

Answer:

Gravity

Explanation:

A planet is gravitationally pulled around the sun.

Olenka [21]3 years ago

5 0

Answer:

beause of gravitys pull and because the atmosphere of the beyond lol also bcs this i hope this helps your welcome boo >3

Explanation:

Newton realized that the reason the planets orbit the Sun is related to why objects fall to Earth when we drop them. The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.

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Plants get energy from the

Rainbow [258]

Answer:

Plants need energy from the sun, water from the soil, and carbon from the air to grow. Air is mostly made of nitrogen, oxygen, and carbon dioxide. So how do plants get the carbon they need to grow? They absorb carbon dioxide from the air.

please make most brainlyest

4 0

2 years ago

True or False: All material has the same density.

Burka [1]

Answer:

Different materials have different densities. So it is False

4 0

3 years ago

Read 2 more answers

Please help need a 100

Triss [41]

B directly; inversely

Pressure and volume have an inverse relationship (when one increases the other increases) while volume and temperature are direct (if one increases so does the other)

Note: these relationships are only true if other factors are constant such as the temperature, and amount (in moles).

3 0

3 years ago

A substance X contains 10 gram of calcium carbonate calculate the number of mole of calcium carbonate present in X

Tasya [4]

$\LARGE{ \boxed{ \rm{ \red{Required \: answer}}}}$

☃️ Chemical formulae ➝ $\sf{CaCO_3}$

For solving this question, We need to know how to find moles of solution or any substance if a certain weight is given.

$\boxed{ \sf{No. \: of \: moles = \frac{given \: weight}{molecular \: weight} }}$

<h3><u>Solution:</u></h3>

Atomic weight of elements:

Ca = 40

C = 12

O = 16

❍ Molecular weight of $\sf{CaCO_3}$

= 40 + 12 + 3 × 16

= 52 + 48

= 100 g/mol

❍ Given weight: 10 g

Then, no. of moles,

⇛ No. of moles = 10 g / 100 g mol‐¹

⇛ No. of moles = 0.1 moles

☄ No. of moles of Calcium carbonate in that substance = <u>0.1 moles</u>

<u>━━━━━━━━━━━━━━━━━━━━</u>

3 0

3 years ago

Read 2 more answers

Which of the following is NOT a postulate of the Kinetic Molecular Theory?

kotegsom [21]

Answer:

"3. Energy can either be destroyed or created. Its goes from one form to another."

Explanation:

The third answer choice, "3. Energy can either be destroyed or created. Its goes from one form to another. " is related to the Law of Conservation of Energy from thermodynamics. Is it not a postulate of the Kinetic Molecular Theory.

<u>"1. Average Kinetic Energy of the system is a measure of the temperature of the system."</u>

Postulate of Kinetic Molecular Theory $\checkmark$

The average kinetic energy of the system is measured by its temperature and nothing else

<u>"2. Energy is conserved in the collisions between gas molecules.."</u>

Postulate of Kinetic Molecular Theory $\checkmark$

All collisions between gas molecules are perfectly elastic, meaning no energy is lost

<u>"3. Energy can either be destroyed or created. Its goes from one form to another.</u>

<u /> $\times$ NOT a Postulate of Kinetic Molecular Theory

Related to Conservation of Energy from thermodynamics

<u>"4. Gases travel in straight line until they collide with other gas molecules"</u>

Postulate of Kinetic Molecular Theory $\checkmark$

All gas molecules will travel in a straight line until they collide with other gas molecules or some object (e.g. a container)

8 0

3 years ago