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Zanzabum
3 years ago
15

For which of these does mRNA copy and carry the code?

Chemistry
1 answer:
marishachu [46]3 years ago
5 0
The answer is (B.) PROTIENS.
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How many grams are 0.5 moles of NaCl???
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Answer:Respuesta. El peso molecular de NaCl es 58gr que equivale a 1 mol. g? hay 0,5mol queda 29gr

Explanation:

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Temperature can weather rocks because A heat can cause minerals to oxidize B. most rocks do not absorb heat evenly C. water cont
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c

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water contracts when it freezes

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What changes if the degree (amount) of intermolecular bonds of a substance are changed?
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<h2>Answer:</h2>

The correct answers are;

volume of a substance

density of a substance

  • The volume and the density of the substance depend on inter molecular forces of the substance. So, when we will change the degree of inter molecular forces, whether decrease it or increase it, it will affect the volume and density of a substance.
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calcium is obtained industrially by electrolysis of molten cacl2 and is used in aluminum alloys. how many coulombs are needed to
Vinvika [58]

It takes 107 minutes 22 seconds and 96500 coulombs of charge produce 20.2 g of calcium.

The balanced equation for the reaction is,

CaCl _{2} \:→ \: Ca ^{ 2 + }  + 2Cl {}^{ - }

The half-reaction of calcium is,

Ca ^{2 + }  + 2e ^{ - } → \: Ca

Mass of calcium = 20.2 g

The molecular mass of calcium = 40 u.

The number of moles calcium are,

Number \: of \: moles =  \frac{mass}{molecular \: mass}

=  \frac{20.2}{40}

= 0.5 \: moles

One mole of Calcium is produced by 2 moles of electrons.

So, 0.5 moles of Calcium produce,

= 0.5 \times 2

= 1 \: mole \: of \: electron

The charge required to produce 202 g of calcium is,

=  1 \:F

= 1 \times 96500 \: C

= 96500 \: C

Current = 15 A

The time taken to produce 20.2 g of calcium is,

I  =  \frac{Q}{T}

T =  \frac{96500}{15}

= 6433.3 \: s

= 107 \: minutes \: 22 \: seconds

Therefore, 96500 columns of charge are required to produce 20.2 grams of calcium. And it takes 107 minutes and 22 seconds.

To know more about charge, refer to the below link:

brainly.com/question/14713274

#SPJ4

7 0
2 years ago
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