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oksano4ka [1.4K]
2 years ago
11

Which of the following is NOT a factor that determines how much energy we need?

Chemistry
2 answers:
german2 years ago
6 0

Answer:

B) The amount of vitamin D gained in 1 day.

Explanation:

Anastaziya [24]2 years ago
6 0
The amount of vitamin d
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Atomic number and place on table.
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How many moles of Al will be consumed when 0.400 mol of Al2O3 are produced in
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Answer:

C) 0.800 mol

Explanation:

  • 4Al + 3O₂ → 2Al₂O₃

In order to <u>convert from moles of Al₂O₃ into moles of Al</u>, we'll need to use<em> the stoichiometric coefficients</em>, using a conversion factor that has Al₂O₃ moles in the denominator and Al moles in the numerator:

  • 0.400 mol Al₂O₃ * \frac{4molAl}{2molAl_2O_3} = 0.800 mol Al

So the correct answer is option C).

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Mintu needs to determine the missing ecosystem in the set.
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Iodine monochloride (ICl) has a higher boiling point than bromine (Br2) partly because iodine monochloride is a(n)
tekilochka [14]

Answer: polar molecule.

Explanation:

The boiling point is the temperature at which the vapor pressure of a liquid equals the external pressure surrounding the liquid. The boiling point is dependent on the type of forces present.

Iodine monochloride (ICl) is a polar molecule due to the difference in electronegativities of iodine and chlorine. Thus the molecules are bonded by strong dipole dipole forces. Thus a higher temperature is needed to generate enough vapor pressure.

Bromine (Br_2) is a non polar molecule as there is no electronegativity difference between two bromine atoms. The molecules are bonded by weak vanderwaal forces and thus has low boiling point.

7 0
3 years ago
10 POINTS!!! Which statement best defines a universal law?
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Answer: Universal law refers to as legal legitimacy,  where those principles and rules are for governing the country. They are most universal in (AATPB) acceptability, applicability, translation, and philosophical basis. They are also considered to be most legitimate.

So basically the answer is A

They are in effect all the time.

Explanation:

Hopefully this helps you

pls mark brainlest

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