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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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Which statement describes a property of covalent compounds?
Marat540 [252]

They have a low boiling point because of weak intermolecular forces. They

Explanation:

Covalent compounds are compounds that are known to have weak intermolecular forces and hence low boiling point.

Covalent bonds are bond formed between two or more atoms having zero or very small electronegativity difference. Such bonds exists between molecules of non-metals.

Here are some properties of covalent bonds;

  • They are gases or volatile liquids or low melting point solids
  • Most of them are insoluble in polar solvents or water but they are generally soluble in non-polar organic solvents.
  • They are mainly non-conductors.

learn more:

Covalent compound brainly.com/question/3109255

Covalent bond brainly.com/question/6029316

#learnwithBrainly

3 0
3 years ago
2Na(s) + Cl2(g) - 2NaCl(s) + 822 kj
pychu [463]

Answer:

Is there any other part to this question? If not I'm pretty sure the answer is 205.5 kJ

Explanation:

8 0
3 years ago
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Element X and Y are two different elements that are placed in the same group in the Periodic Table of Elements. Which of the fol
balu736 [363]

Answer:

A Atoms of element X and Y have same number of electrons

3 0
3 years ago
The temperature in the stratosphere is −24°c. calculate the root-mean-square speeds of n2, o2, and o3 molecules in this region.
Sholpan [36]
<span>Use Root mean square speed formula: vrms = Sqrt (3RT/M) T - temperature in K = 273K - 21CÎż = 252K R- molar gas constant = 8.31J/Kmol M - molar mass of a molecule MN2 = 14x2 = 28 g/mol MO2 = 16 x 2 = 32 g/mol MO3 = 16 x 3 = 48 g/mol Having all info now, you can calculate root mean square speed,vrms , for every molecule by using the aboveequasion and only changing M value.</span>
5 0
3 years ago
Food labels list the amount of carbohydrates, fats, and proteins, but not nucleic acids. why not
garri49 [273]
The structure of the nucleic acids are having three functional groups, namely, sugar, phosphate group and nitrogenous base. The only source of nucleic acids is your human body in the form of DNA and RNA. They are not obtained from the external environment. This is because the only purpose of nucleic acids are containing the genetic information and the transcription of amino acids to form proteins.
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4 years ago
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