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AlladinOne [14]
3 years ago
13

Please help

Chemistry
2 answers:
Nataliya [291]3 years ago
5 0
Uracil doesn't present in DNA and the order of nitrogenous bases in DNA is Adenine, Guanine, Cytosine, Thymine

In short, Your Answer would be Option A

Hope this helps!
Zina [86]3 years ago
4 0
The base pairs in DNA are A+T and G+C so the first set.
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A single atom of an element has 11 protons, 11 electrons, and 12 neutrons. Which element is it?
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Answer:

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Using the example in the above information determine the empirical formula of a compound if a sample contains 0.130 g of nitroge
olga2289 [7]

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Explanation : Given,

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To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Oxygen = \frac{\text{Given mass of oxygen}}{\text{Molar mass of oxygen}}=\frac{0.370g}{16g/mole}=0.0231moles

Moles of Nitrogen = \frac{\text{Given mass of nitrogen}}{\text{Molar mass of nitrogen}}=\frac{0.130g}{14g/mole}=0.00928moles

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 0.00928 moles.

For Oxygen  = \frac{0.0231}{0.00928}=2.4\approx 2

For Nitrogen = \frac{0.00928}{0.00928}=1

Step 3: Taking the mole ratio as their subscripts.

The ratio of O : N = 2 : 1

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