Which one of the following formulas represents an aldehyde? A. C2H5OH B. CH3COOH C. C6H10O5 D. C2H4O
2 answers:
Answer:
D.
Explanation:
For this case, we have to keep in mind that the structure of the aldehyde has an oxo <u>group (C=O) bonded to a primary carbon</u>. Therefore we have to search for this group in the options given.
For the first option, we have an OH group, so it is an <u>alcohol</u>. For B. we have an acid because the <u>carboxylic acid group</u> is present (<u>COOH</u>). For C. we have a very complex structure in which we have several oxo groups but <u>neither is bonded to a primary carbon</u>. In the last structure, we have the <u>aldehyde group</u> (see figure).
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<h2>Hello!</h2>
The answer is:
We have that there were produced 0.120 moles of
We are asked to calculate the number of moles of the given gas, also, we are given the volume, the temperature and the pressure of the gas, we can calculate the approximate volume using The Ideal Gas Law.
The Ideal Gas Law is based on Boyle's Law, Gay-Lussac's Law, Charles's Law, and Avogadro's Law, and it's described by the following equation:
Where,
P is the pressure of the gas.
V is the volume of the gas.
n is the number of moles of the gas.
T is the absolute temperature of the gas (Kelvin).
R is the ideal gas constant (to work with pressure in mmHg), which is equal to:
We must remember that the The Ideal Gas Law equation works with absolute temperatures (K), so, if we are given relative temperatures such as Celsius degrees or Fahrenheit degrees, we need to convert it to Kelvin before we proceed to work with the equation.
We can convert from Celsius degrees to Kelvin using the following formula:
So, we are given the following information:
Now, isolating the number of moles, and substituting the given information, we have:
Hence, we have that there were produced 0.120 moles of
Have a nice day!