A teacher makes the following statement.

2 answers:

5 0

The correct answer among the choices given is the first option.The teacher most likely is talking about distillation of a mixture. Distillation is a unit operation that separates component substances from a liquid mixture which is shown by the teacher. Also, the most common purifying technique in the production of gasoline is by this process.

vlada-n [284]3 years ago

3 0

the answer is the first option on e2020

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Which observation does not indicate that a chemical reaction has occurred?

castortr0y [4]

Answer:

change in the total mass of substances

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3 years ago

N each reaction box, place the best reagent or reactant from the list below. reagents may be used more than once or not at all.

Ne4ueva [31]

Answer:

See explaination

Explanation:

See attachment for the drawing of the intermediate products b and c (both are neutral; omit byproducts).

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It takes to break an iodine-iodine single bond. Calculate the maximum wavelength of light for which an iodine-iodine single bond

Zolol [24]

The given question is incomplete. The complete question is :

It takes 151 kJ/mol to break an iodine-iodine single bond. Calculate the maximum wavelength of light for which an iodine-iodine single bond could be broken by absorbing a single photon. Be sure your answer has the correct number of significant digits.

Answer: 793 nm

Explanation:

The relation between energy and wavelength of light is given by Planck's equation, which is:

$E=\frac{hc}{\lambda}$