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katrin2010 [14]
3 years ago
10

A chemist needs 22.0 grams of phenol, C6H5OH, for an experiment. how many molecules of phenol would this be?

Chemistry
1 answer:
spin [16.1K]3 years ago
3 0

0.234 mol CC_{6}  H_{5}  OH

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Describe a method to calculate the average atomic mass of the sample in the previous question using only the atomic masses of li
alexira [117]

Answer:

Explanation:

To calculate their average atomic masses which is otherwise known as the relative atomic mass, we simply multiply the given abundances of the atoms and the given atomic masses.

The abundace is the proportion or percentage or fraction by which each of the isotopes of an element occurs in nature.

This can be expressed below:

        RAM = Σmₙαₙ

where mₙ is the mass of isotope n

           αₙ is the abundance of isotope n

for this problem:

RAM of Li = m₆α₆ + m₇α₇

       m₆ is mass of isotope Li-6

        α₆ is the abundance of isotope Li-6

       m₇ is mass of isotope Li-7

        α₇ is the abundance of isotope Li-7

3 0
3 years ago
A television weights 8.50 pounds. How many grams is this?
kolezko [41]

Answer:

3,855.532 grams

Explanation:

1 pound = 453.592 grams

8.50 = ? grams

--> 8.50 * 453.592 = 3,855.532 grams.

4 0
3 years ago
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zzz [600]

Answer:

An Alkaline solution should be the answer to that.

8 0
3 years ago
(05.06 LC)
goblinko [34]

Answer:

C

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because percentage yield =actual/theoretical yield

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1. C

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