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pentagon [3]
3 years ago
11

Celestial object A is composed of 92.1 percent hydrogen and 7.8 percent helium while celestial object B is made up of ice, froze

n carbon dioxide, rock, and dust. What is celestial object A? A. asteroid B. comet C. dwarf planet D. black hole E. star
Chemistry
1 answer:
Andrew [12]3 years ago
5 0

Answer:

star

Explanation:

stars are composed of 92.1 percent hydrogen and 7.8 percent helium.

You might be interested in
Which of the following accurately describes rill erosion?
worty [1.4K]

Answer:

C. Runoff from heavy rainfall forms narrow, shallow channels.

Explanation:

Erosion is the gradual washing away of the top layer of the soil or earth on which plant grows. There are three main types of erosion which are:

1. Sheet erosion

2. Gully erosion

3. Rill erosion

Rill erosion occurs when a soil layer is gradually being washed away by narrow stream channels called streamlets on the surface. After a heavy downpour, the streamlets facilitates the movement of water on the ground surface and in turn, earth materials are worn away.

When these streamlets becomes deeper, they form gullies. Gullies results into gully erosion.

When runoff removes soil and loose sediment in thin layers it is called sheet erosion.

4 0
3 years ago
What will happen if you weighed out a quantity of beans
Ostrovityanka [42]

Answer:

When we weigh beans in this mass ratio, we must obtain the same number of beans.Explanation:

Nothing will happen

3 0
3 years ago
6. If the pressure of a gas is 1.01 atm and the temperature is 25°C, then if the pressure is increased to 1.10, what is the new
gayaneshka [121]

Answer:

324.554 K

Explanation:

Which can be converted back to °C by subtracting 273

Once again thus answer can be found using the gas law P1/T1 =P2/T2

Remember to convert to Kelvin before doing the calculations by adding 273

3 0
3 years ago
Which of these describes a challenge that the engineer of a high-altitude
liraira [26]

Answer:

I think its (B)

Explanation:

as when the air thins out at higher elevations, your lift decreases so at some point, the plane cant produce enough lift to overcome gravity.

4 0
3 years ago
Read 2 more answers
It’s is the same one from my recent ones
UkoKoshka [18]
<h2>9. Given : P + O2 = P2O5</h2>

Balanced Chemical Equation: <u>4</u>P + <u>5</u>O2 = <u>2</u>P2O5

<u>Reactant Product</u>

P = (1) 4 | P = (2) 4

O = (2) 10 | O = (5) 10

Reaction Information

Phosphorus + Dioxygen = <u>Phosphorus Pentoxide</u>

Reaction Type: <u>Synthesis</u>

<h2>10. Given: HCl + NaOH = NaCl + H2O </h2>

<u>Reactant Product</u>

H = 2 | H = 2

Cl = 1 | Cl = 1

Na = 1 | Na = 1

O = 1 | O = 1

<h3>Chemical Equation is already in balance.</h3>

Reaction Information<em>:</em><em> </em><em>Hydrogen Chloride </em>+ <em>Sodium Hydroxide</em> = <em>Sodium Chloride </em>+ <em>Water</em>

Reaction Type<u> </u><u>:</u><u> </u><u>Double Displacement (Acid-Base)</u>

<h3>For more info:</h3>

<u>How to balance chemical equation?</u>

brainly.com/question/15939935

5 0
4 years ago
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