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Annette [7]
4 years ago
10

Assign oxidation numbers to each element in this compound. NO N = O =

Chemistry
1 answer:
Andrei [34K]4 years ago
7 0
<h3><u>Answer;</u></h3>

Oxidation number of O =-2 and N= +2

<h3><u>Explanation;</u></h3>
  • The oxidation number of an atom is the charge that atom would have if the compound was composed of ions.
  • NO is a gas whose oxidation number is zero.
  • The oxidation number of oxygen is almost always -2
  • Therefore to find the oxidation number of Nitrogen;

<em>-2 + x = 0</em>

<em>x = +2 </em>

<em>The oxidation number of N is + while that of O is -2 </em>

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Write the empirical formulas of the following compounds: (a) Al2Br6, (b) Na2S2O4, (c) N2O5, (d) K2Cr2O7, (e)H2C2O4.
babunello [35]

Answer:1. AlBr_3

2. NaSO_2

3.N_2O_5

4. K_2Cr_2O_7

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Explanation:

Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.  

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

1. Al_2Br_6 has empirical formula of AlBr_3

2. Na_2S_2O_4 has empirical formula of NaSO_2

3.N_2O_5 has empirical formula of N_2O_5  

4. K_2Cr_2O_7 has empirical formula of K_2Cr_2O_7

5. H_2C_2O_4 has empirical formula of HCO_2  

4 0
3 years ago
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6 0
4 years ago
Which statement best explains the purpose of using a mole in the measurement of matter? It is commonly used as another unit of m
ladessa [460]

Answer:

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Instead of saying 6.022 x 10 ^23 atoms, chemists can say that is one mole, allowing bigger numbers of atoms to be more easily attained.

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6 0
3 years ago
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