.
<h3>Explanation</h3>
Units of each quantity:
- <em>P</em> = 28 atm;
- <em>V</em> = 0.045 L;
- <em>n</em> = 0.020 mol;
Ideal gas constant:
.
Apply the ideal gas law:
.
All data given in this question come with two significant figures. Round the value of <em>T</em> to two significant figures:
.
The world's largest mass extinction was the Permian-Triassic event about 250 million years ago, which wiped out 95% of earth's species. It marked the end of the Paleozoic era …and the beginning of the Mesozoic.
The answer is Electron
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The number of neutrons is variable, resulting in isotopes, which are different forms of the same atom that vary only in the number of neutrons they possess. Together, the number of protons and the number of neutrons determine an element's mass number.
