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3 years ago

Suppose an alkane had 30 hydrogen atoms. How many carbon atoms would it have?

Chemistry

2 answers:

vesna_86 [32]3 years ago

5 0

The answer would be C - 14 atoms.

liberstina [14]3 years ago

3 0

Answer: c. 14 atoms

Explanation:

Saturated hydrocarbons are defined as the hydrocarbons in which a single bond is present between carbon and carbon atoms. The general formula for these hydrocarbons is $C_nH_{2n+2}$ and they are called as alkanes.

Given: An alkane contains 30 hydrogen atoms

Thus we can write:

$2n+2=30$

$2n=28$

$n=14$

Thus the number of carbon atoms will be n which is 14.

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2 years ago

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3 years ago

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What is the ph of a solution labeled .30 trimethylamine k for trimethylamine is 7.42 x 10^4

valentina_108 [34]

Answer:the pH is 12

Explanation:

First We need to understand the structure of trimethylamine

Due to the grades of the bond in the nitrogen with a hybridization sp3 is 108° approximately, then is generated a dipole magnetic at the upper side of the nitrogen, this dipole magnetic going to attract a hydrogen molecule of the water making the water more alkaline

C3H9N+ H2O --> C3H9NH + OH-

$k=\frac{[C3H9NH]*[OH-]}{[C3H9N]}$

Then:

The concentration of the trimethylamine is 0.3 and the concentration of the ion C3H9NH is equal to the OH- relying on the stoichiometric equation. We could find the concentration of the OH- ion with the square root of the multiplication between k and the concentration of trimethylamine

[OH-]= $\sqrt{ 0.3*7.42x10^{-4}}$

[OH-]=0.01

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3 years ago

If an element has three isotopes with known masses, what other information is needed to find the average atomic mass of the elem

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