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EastWind [94]
3 years ago
7

In the evolution of extremely large stars, they begin as supergiants or supernovas, if the star nucleus is large enough it will

continue to contract and form neutron stars, and finally, if the contractions continue, everything around the neutron star and the neutron star itself will be pulled into what is called a
Chemistry
2 answers:
fenix001 [56]3 years ago
6 0
Black hole, or a singularity contained within an event horizon through which no light can escape.
LiRa [457]3 years ago
5 0

Answer: The answer would be black hole

Explanation: if you’re using Edgenty they explain it in the lesson

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Combustion analysis of 63.8 mg of a c, h and o containing compound produced 145.0 mg of co2 and 59.38 mg of h2o. what is the emp
Makovka662 [10]
<span>: The empirical formula for the compound is C3H60 (see below) CO2 is the only product containing C, C produced = 145.0 mg CO2 x (1 g / 1000 mg) x (1 mole CO2 / 44.0 g CO2) x (1 mole C / 1 mole CO2) = 0.00330 moles C. H2O is the only product containing H, H produced = 59.38 mg H2O x (1 g / 1000 mg) x (1 mole H2O / 18.0 g H2O) x (2 moles H / 1 mole H2O) = 0.00660 moles H. Oxygen is in both and the unknown reacts with oxygen(in the air) 0.00330 moles C x (12.0 g C / 1 mole C) = 0.0396 g C = 39.6 mg C 0.00660 moles H x (1.01 g H / 1 mole H) = 0.00667 g H = 6.7 mg H Because the unknown weighed 63.8 mg and consists off justC, H, and O, then mass O = g unknown - g C - g H = 63.8 mg - 39.6 mg - 6.7 mg = 17.5 mg = 0.0175 g 0.0175 g O x (1 mole O / 16.0 g O) = 0.00109 moles O The mole ratio of C:H:O is: C = 0.00330 H = 0.00660 O = 0.00109 Divide by the smallest you get: C = 0.00330 / 0.00109 = 3.03 H = 0.00660 / 0.00109 = 6.06 O = 0.00109 / 0.00109 = 1.00</span>
6 0
4 years ago
The H atom and the Be3³⁺ ion each have one electron. Does the Bohr model predict their spectra accurately? Would you expect thei
lbvjy [14]

Explanation:

a) Bohr model is perfect for atoms that have single electron and fortunately both Be3+ ion and H atom have one electron so, Bohr model can easily and accurately applied to predict the spectrum of Be3+ and H atom.

b) The energy of an atom in  Bohr model is given by

E= \frac{-13.6z^2}{n^2}

the values of z for H atom and Be3+ ion are 1 and 4 respectively. Hence, energy of atoms would be different for both atoms. Hence, line spectra to be identical is not possible.

4 0
3 years ago
Which set of terms best defines what affects kinetic energy and potential energy, respecrively<br>​
xeze [42]
The correct answer is velocity and height!
7 0
3 years ago
Write the electron configurations for each of the following elements:
Stolb23 [73]

Answer:

  • (a) E.C - 2,8,8,3
  • (b) E.C - 2,8,8,4
  • (c) E.C - 2,8,8,6
  • (d) E.C - 2,8,8,8
  • (e) E.C - 2,8,8,8,18
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4 years ago
The structures found in a living cell can be compared to the parts of a factory that produces cars. Which part of the factory is
liberstina [14]

The computers that help control the machines in the factory

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3 years ago
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