What would be the formula for an alkane which contains 30 hydrogen atoms? C__H30 16 18 14 15
2 answers:
Answer: Option (c) is the correct answer.
Explanation:
A hydrocarbon that contains only carbon and hydrogen atoms attached through single bonds is known as an alkane.
General formula for alkanes is where n is any integer.
For example, a hydrocarbon with 30 hydrogen atoms will have the value of "n" as follows.
Total hydrogen atoms = 2n + 2
30 = 2n + 2
30 - 2 = 2n
n = 14
Therefore, number of carbon atoms in this hydrocarbon will be 14.
Hence, we can conclude that formula for an alkane which contains 30 hydrogen atoms is .
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If the highest priority groups are on the same side, it is known as Z-form and if the highest priority groups are on opposite side, it is known as E-form.
We are given (Z)-3-bromo-6-methyl-2-heptene, in this the highest priority groups are bromine on one side and methyl- group on another side.
The structure is provided in the image below.
The question is incomplete, here is the complete question:
If 65 mL of sulfuric acid and 25 mL of sodium hydroxide were mixed and the solution had a density of 1.01 g/mL, What is the heat of the calorimeter in kJ given the temperature change of the above equation is -5.5 K. You may assume the solution has a heat capacity of 4.180 J/gK. Express your final answer in kJ and with 2 decimal places
<u>Answer:</u> The heat of the calorimeter is 2.09 kJ
<u>Explanation:</u>
To calculate the mass of solution, we use the equation:
Density of solution = 1.01 g/mL
Volume of solution = [65 + 25] mL = 90 mL
Putting values in above equation, we get:
To calculate the heat released by the reaction, we use the equation:
where,
q = heat released
m = mass of solution = 90.9 g
c = heat capacity of solution = 4.180 J/g.K
= change in temperature = -5.5 K
Putting values in above equation, we get:
Heat released by the solution will be equal to the heat absorbed by the calorimeter.
<u>Sign convention of heat:</u>
When heat is absorbed, the sign of heat is taken to be positive and when heat is released, the sign of heat is taken to be negative.
Heat absorbed by the calorimeter = -(-2.09) = 2.09 kJ
Hence, the heat of the calorimeter is 2.09 kJ