Hi. i need help with this. i lack with this subject

Chemistry

2 answers:

Vesnalui [34]2 years ago

8 0

Answer: It's the circulatory system

Explanation:

Marat540 [252]2 years ago

5 0

Answer:

It's the circulatory system

Explanation:

hope it helps you

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2NO + 3MnO2 + 4H â 2NO3- + 3Mn2 + 2H2O For the above redox reaction, assign oxidation numbers and use them to identify the eleme

mixer [17]

Answer:

Manganese decreases from 4+ to 2+ (reduced and oxidizing agent) and nitrogen increases from 2+ to 5+ (oxidized and reducing agent).

Explanation:

Hello there!

In this case, according to the given redox reaction, we rewrite it as a convenient first step:

$2NO + 3MnO_2 + 4H^+ \rightarrow 2NO_3^- + 3Mn^{2+} + 2H_2O$

Next, we assign the oxidation numbers as follows:

$2N^{2+}O^{2-} + 3Mn^{4+}O^{-2}_2 + 4H^+ \rightarrow 2(N^{5+}O^{2-}_3)^- + 3Mn^{2+} + 2H^+_2O^{2-}$

Thus, we can see that both manganese and nitrogen undergo a change in their oxidation number, the former decreases from 4+ to 2+ (reduced and oxidizing agent) and the latter increases from 2+ to 5+ (oxidized and reducing agent).

Regards!

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3 years ago

Dalton's atomic theory

kotykmax [81]

Dalton's atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks. While all atoms of an element were identical, different elements had atoms of differing size and mass.

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3 years ago

Can somebody help me

Anastaziya [24]

It would be:
2H2 + O2 -> 2H2O

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3 years ago

During a hot and humid day, large and dense clouds known as cumulonimbus clouds form. In many cases these clouds will result in

julsineya [31]

the answer is c- thunderstorms

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3 years ago