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Bas_tet [7]
3 years ago
11

How are stars and comets different?

Chemistry
1 answer:
ehidna [41]3 years ago
3 0
The answer is letter C.

Because we classify something as a star when it is: a large ball of gas that undergoes nuclear fusion. Given this definition, a comet is not a star. A comet is a ball of ice and dirt hurtling through space, it shines only because it reflects ligh
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At what point will potential energy be the highest? The object has a mass of 5 kg
Sloan [31]

Explanation:

Given that,

The mass of the object, m = 5 kg

We need to find the maximum potential energy. When the height of the object is maximum it will have the maximum potential energy.

The attached figure shows that the maximum height is 25 m. The formula for the potential energy is given by :

P=mgh\\\\P=5\times 9.8\times 25\\\\P=1225\ J

So, when the height is 25 m, the object will have the highest potential energy.

3 0
3 years ago
The proper technique used to obtain a liquid sample using a pipette involves: Group of answer choices your mouth on one end of t
Ksivusya [100]

Answer:

A suction bulb or pipette pump to suction the sample.

Explanation:

There are different types of pipettes that can be used in a laboratory:

  • Volumetric pipette-used to transfer a specific calculated amount of liquid
  • Graduated pipettes-used to transfer different calculated amounts of liquid from one container to another.
  • Micropipettes-used to transfer small amounts of liquids
  • Pasteur pipettes- just like micropipettes, pasteur pipettes are used to transfer small amounts of liquids, but manually. They are also called droppers.

5 0
3 years ago
What is the percent composition by mass of chlorine in LiCI
Lelechka [254]

Answer: Lithium (Li) 16.373%

Chlorine (Cl) 83.627%

Explanation:

6 0
3 years ago
I’m making a transition from stare n=1 to state n=2 the hydrogen atom must
MatroZZZ [7]

Answer:

Water, 35 liters. Carbon, 20 kilograms. Ammonia, 4 liters. Lime, 1.5 kilograms. Phosphorous, 800 grams. Salt, 250 grams. Saltpeter, 100 grams. Sulfur, 80 grams. Fluorine, seven-point-five. Iron, five. Silicon, three grams. And trace

amounts of 15 other elements.

the ingredients of the average adult,right down to the last specks of protein in your eyelashes. And even though science has given us the entire physical breakdown, there's never been a successful attempt at bringing a human to life. There's still something missing. Something scientists haven't been able to find in centuries of research. ...and in case you're wondering, all those ingredients can be bought on a child's allowance. humans can be made rather cheap. There's no magic to it.

6 0
3 years ago
Assume that helium behaves as an ideal monatomic gas. If 2 moles of helium undergo a temperature increase of 100 k at constant p
Helga [31]

4157 J work is done by the gas , If 2 moles of helium undergo a temperature increase of 100 K at constant pressure.

<h3>What are Noble Gases ?</h3>

The noble gases are helium, argon, krypton, xenon, and radon, in order of their mass.

They are called noble gases because they are so majestic that they do not react with anything in general.

The work done can be calculated by the formula

Q=n Cp ΔT

Cp= ( 1+ f/2)R

R= 8.3144598 J. mol-1.

Cp = (1+3/2) * 8.314

Cp = 5*8.314/2

Q= 2 * 5 *8.314 *100/2

Q = 4157 J

Therefore 4157 J work is done by the gas , If 2 moles of helium undergo a temperature increase of 100 K at constant pressure.

To know more about Noble Gas

brainly.com/question/2094768

#SPJ4

3 0
2 years ago
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