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3 years ago

Which of the following reactions shows that the formation of NO2 requires

Chemistry

2 answers:

Bingel [31]3 years ago

7 0

D is the right answer

dsp733 years ago

3 0

Answer:

OPTION B:

1/2 N2(g) + O2(g) + 33.1 kJ NO2(g)

IS CORRECT

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What is a observation ?

SOVA2 [1]

An active skill of information from a primary source

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3 years ago

When solid Ni metal is put into an aqueous solution of Pb(NO3)2, solid Pb metal and a solution of Ni(NO3)2 result. Write the net

Sonja [21]

Answer:

$Pb^{2+}(aq)+Ni(s)\rightarrow Ni^{2+}(aq)+Pb(s)$

Explanation:

Hello there!

In this case, according to the given information, it turns out firstly necessary for us to write the complete molecular equation as shown below:

$Pb(NO_3)_2(aq)+Ni(s)\rightarrow Ni(NO_3)_2(aq)+Pb(s)$

Now, we can separate the nitrates in ions as they are aqueous to obtain:

$Pb^{2+}(aq)+2(NO_3)^-(aq)+Ni(s)\rightarrow Ni^{2+}(aq)+2(NO_3)^-(aq)+Pb(s)$

And then, we cancel out the nitrate ions as the spectator ones, for us to obtain the net ionic equation:

$Pb^{2+}(aq)+Ni(s)\rightarrow Ni^{2+}(aq)+Pb(s)$

Best regards!

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3 years ago

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Evgesh-ka [11]

1) B, Not 100% sure though

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4 years ago

Al2(SO3)3 what are the number of atoms

allochka39001 [22]

Answer:In the chemical formula Al2(SO4)3, the Al2 means there two aluminium (atoms or ions). The SO4 is a sulfate ion and (SO4)3 means there are 3 sulfate ions. The number 3 before Al2(SO4)3 means there are three times the number of atoms and ions of the chemical formula.

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4 years ago

How is the number of neutrons in the nucleus of an atom calculated?

OLEGan [10]

The correct answer is C

5 0

3 years ago

Read 2 more answers