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saw5 [17]
3 years ago
6

A rocket launches because of __________.

Chemistry
2 answers:
motikmotik3 years ago
5 0

Answer:

A, an opposite reaction

Hope this helps :)

Liono4ka [1.6K]3 years ago
4 0

Answer:

an opposite reaction

Earth's gravity is still pulling down on the rocket. When a rocket burns propellants and pushes out exhaust, that creates an upward force called thrust. To launch, the rocket needs enough propellants so that the thrust pushing the rocket up is greater than the force of gravity pulling the rocket down.

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If you add two protons to a nitrogen atom what would happen to it ?
likoan [24]

Answer:

This happens when there are too many protons in the nucleus, because the positive protons repel each other. When two protons fuse together, one of them decays into a neutron. Our new nucleus now has one proton and one neutron. PLEASE MARK AS BREINLEST.

8 0
3 years ago
The moon is 250,000 miles away. How many inches is it from earth?
Lapatulllka [165]

Answer:

1.584e10 = 15,840,000,000,000

Explanation:

250,000 miles

multiply the length value by 63360

25e4 x 63360

= 1.584e10

3 0
3 years ago
Read 2 more answers
1. What are examples of physical properties of a compound?
vfiekz [6]

Answer:  Melting point and boiling point

Explanation:

Chemical Reaction

8 0
3 years ago
What are the [H₃O⁺] and the pH of a buffer that consists of 0.20 M HF and 0.25 M KF (Kₐ of HF = 6.8X10⁻⁴)?
Charra [1.4K]

The pH of 0.20 M HF (Hydrofluoric acid) is 3.27.  Whereas, [H₃O⁺] for the same is 6.8 X10 ⁻⁴

<h3>What is Hydrofluoric acid?</h3>

A hydrogen fluoride and water solution is hydrofluoric acid. HF solutions are colorless, corrosive, and acidic. The majority of fluorine-containing chemicals are made using it; examples include the substance PTFE and the widely used psychiatric drug fluoxetine. Aluminum, plastics, electrical components, pharmaceuticals, high-octane fuel, fluorescent light bulbs, and refrigerants are all made with hydrogen fluoride. The production of refrigerants uses 60% of the hydrogen fluoride used in manufacturing. corrosive due to the acid's H+ ions and poisonous due to the fluoride ions F-, which can penetrate deeply, chelate calcium and magnesium, and thus upset biological balances due to the destruction of the skin's or an eye's outermost layer.

To learn more about Hydrofluoric acid, visit:

brainly.com/question/24194581

#SPJ4

5 0
2 years ago
Can some one help I'm lost iam being timed:( Show using two conversion factors how you would convert from 0.020 kg into mg
dezoksy [38]

Answer:

20000 Mg

Explanation:

5 0
3 years ago
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