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Anna007 [38]
3 years ago
14

During which of the following months is the sun likely to illuminate Earth equally from pole to pole?

Chemistry
1 answer:
Gekata [30.6K]3 years ago
6 0
<span>The sun likely to illuminate Earth equally from pole to pole during March and September.

During these two months, both poles receive the same amount of light. This time is called Equinox. 

</span>
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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:

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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).

7 0
2 years ago
Substances that are readily combustible or may cause fire through friction
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Answer :

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Explanation :

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For example, <em>methanol</em> is a flammable liquid.

A flammable solid may also catch fire through friction. <em>Matches</em> are flammable solids.

3 0
3 years ago
A mixture of CuSO4 · 5H2O and MgSO4 · 7H2O is heated until all the water is lost. If 5.127 g of the mixture gives 2.817 g of the
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Answer:

Let the mixture is X% by mass of CuSO

4

.5H

2

O and 100 - X % by mass of MgSO

4

.7H

2

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4

.5H

2

O and 5.0 - 0.05X g MgSO

4

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2

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4

.5H

2

O and MgSO

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O are 249.7 g/mol and 246.5 g/mol respectively.

The number of moles of CuSO

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0.05X

=2.00×10

−4

X moles.

Explanation:

Pls mark it as branliest answere thanks

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3 years ago
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