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Darina [25.2K]
3 years ago
14

In the following equation, which element has been oxidized?

Chemistry
1 answer:
Bumek [7]3 years ago
6 0

The  element  that has  been  oxidized   is Al  (  Answer  A)


Explanation

 if  the oxidation number of an element is greater in the product side than the reactant  side  then the element   has lost  the electrons . This mean  that  the element  has been oxidized.

Al  is  oxidized  because  it move  from  oxidation  state  Zero(0)  in reactant side  to  oxidation state 3⁺  in product  side.

This  implies  that  Al  loses  3  electrons.

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7 0
3 years ago
The following thermochemical equation is for the reaction of nitrogen(g) with oxygen(g) to form nitrogen dioxide(g). N2(g) + 2O2
Rzqust [24]

<u>Answer:</u> The mass of nitrogen gas reacted to produce given amount of energy is 5.99 grams.

<u>Explanation:</u>

The given chemical reaction follows:

N_2(g)+2O_2(g)\rightarrow 2NO_2(g);\Delta H=66.4kJ

We know that:

Molar mass of nitrogen gas = 28 g/mol

We are given:

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To calculate the mass of nitrogen gas reacted, we use unitary method:

When enthalpy change of the reaction is 66.4 kJ, the mass of nitrogen gas reacted is 28 grams.

So, when enthalpy change of the reaction is 14.2 kJ, the mass of nitrogen gas reacted will be = \frac{28}{66.4}\times 14.2=5.99g

Hence, the mass of nitrogen gas reacted to produce given amount of energy is 5.99 grams.

8 0
3 years ago
Which species is the reducing agent in a redox reaction? Chem is hard​
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Answer:

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Explanation:

<h2>Hopes this helps. Mark as brainlest plz!</h2>
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