Nicotine has a molecular formula of C10H14N2. What is the empirical formula?

The molecular formula for nicotine is C10H14N2, meaning that a single molecule has 10 carbon atoms, 14 hydrogen atoms, and two nitrogen atoms. The empirical formula is a reduced version of this that shows only the ratios of the elements: C5H7N.

Explanation:

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i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

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(jacemorris04)