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bazaltina [42]
3 years ago
12

Which of the following molecules does not contain nitrogen

Chemistry
2 answers:
Leni [432]3 years ago
3 0

Answer:

Sorry I can't see which molecules you are talking about

stellarik [79]3 years ago
3 0

Answer:

polysaccharides

Explanation:

- Nucleic acid contain nitrogens

- based protein contains nitrogen

-in amino acid lipid lack nitrogen

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Benzene is 92.3% carbon and 7.7% hydrogen. In anexperiment,
Marysya12 [62]

Answer:

The molecular formula of benzene = C_{6}H_{6}

Explanation:

Moles =\frac {Given\ mass}{Molar\ mass}

% of C = 92.3

Molar mass of C = 12.0107 g/mol

% moles of C = \frac{92.3}{12.0107} = 7.6848

% of H = 7.7

Molar mass of H = 1.00784 g/mol

% moles of H = \frac{7.7}{1.00784} = 7.6401

Taking the simplest ratio for C and H as:

7.6848 : 7.6401

= 1 : 1

The empirical formula is = CH

Molecular formulas is the actual number of atoms of each element in the compound while empirical formulas is the simplest or reduced ratio of the elements in the compound.

Thus,  

Molecular mass = n × Empirical mass

Where, n is any positive number from 1, 2, 3...

Mass from the Empirical formula = 12+ 1 = 13 g/mol

Molar mass = 78.0 g/mol

So,  

Molecular mass = n × Empirical mass

78.0 = n × 13

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<u>The molecular formula of benzene = C_{6}H_{6}</u>

7 0
4 years ago
PLEAS HELP I HAVE LIMITED TIME!!
Burka [1]

Answer:

H2 is the limiting reactant.

Explanation:

From the diagram above:

H2 => White ball

O2 => Red ball

Before the reaction

H2 => White ball => 10

O2 => Red ball => 7

After the reaction

H2O => White and red ball => 10

O2 => 2

From the simple illustration above, we can see that all the H2 were used up in the reaction but there are left over of O2.

This simply means that H2 is the limiting reactant as all of it is used up in the reaction while O2 is the excess reactant as there are leftover.

7 0
3 years ago
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