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4 years ago

9

The following chemical equation is not balanced: I2 + Na2S2O3 NaI + Na2S4O6 When this chemical equation is correctly balanced, w

hat is the coefficient of the NaI molecule? A. 1 B. 2 C. 3 D. 4

1 answer:

marshall27 [118]4 years ago

4 0

Answer:

The answer is B

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Is cycle list Road at an average speed of 15 mph 430 miles how long was the ride

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$430/15=28\frac{2}{3}$ hours

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4 years ago

Do you think that there is a high correlation between proficiency in mathematics and proficiency in chemistry? Explain why or wh

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3 years ago

PbO2 + 4HCl --- PbCl2 + Cl2 + 2H2O who buys electrons and who loses electrons?

SIZIF [17.4K]

<u>Answer:</u> Electrons are taken up by $PbO_2$ and they are lost by $HCl$

<u>Explanation:</u>

Redox reaction is defined as the reaction in which oxidation and reduction take place simultaneously. It is also called the reaction where the exchange of electrons takes place.

An oxidation reaction is defined as the reaction in which a chemical species loses electrons takes place. In this reaction, the oxidation state of a substance gets increased.

A reduction reaction is defined as the reaction in which a chemical species gains electrons takes place. In this reaction, the oxidation state of a substance gets reduced.

For the given chemical reaction:

$PbO_2+4HCl\rightarrow PbCl_2+Cl_2+2H_2O$

The half-reactions for this redox rection follows:

<u>Oxidation half-reaction:</u> $2HCl\rightarrow ClO_2 + 2e^-$

<u>Reduction half-reaction:</u> $PbO_2+2e^-\rightarrow PbCl_2$

Hence, electrons are taken up by $PbO_2$ and they are lost by $HCl$

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3 years ago

In reaction CFCl3 + UV Light -> CFCl2 + Cl, there is only one reactant (CFCl3) and no collision

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The reaction CFCl3 + UV Light -> CFCl2 + Cl does not need another reactant as with CFCl3 because the reaction itself is reactive to light. Note that there are reactions that are sensitive to light to form products and when this type of reaction are not exposed to light, no reaction occurs.

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4 years ago

HELLPPPPPP FASTTT !!

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AND OCYGENAND OXYGEN!!
** hope this helps

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3 years ago

Read 2 more answers