After each half-life, half of the original sample will remain.
Therefore, in 71.5 days, taking into consideration that a half-life is 14.3 days, there will be 5 half-lives.
Therefore, we split 4 in half, then in half again, etc. five times.
4 ⇒ 2 1st half-life
2⇒ 1 2nd half-life
1 ⇒ 1/2 3rd half-life
1/2 ⇒ 1/4 4th half-life
1/4 ⇒ 1/8 5th half-life
Therefore, 1/8 m of the sample will remain
It is 112. mL or C
(this is to fill the 20 character Gap.)
1.24 moles of naphthalene are required to react stoichiometrically with 1.24 moles of 2-Bromo-2-methylpropane to produce 1.24 moles of t-butyl naphthalene.
<h3>Define Naphthalene.</h3>
An organic substance having the formula C 10H 8 is naphthalene. It is the most basic polycyclic aromatic hydrocarbon, and it has a distinctive odor that may be detected at concentrations as low as 0.08 ppm by mass. It is a white crystalline solid. Naphthalene is an aromatic hydrocarbon with a fused pair of benzene rings as its main structural component. It is most well-known for being the major component of conventional mothballs.
given that,
the moles of 2-Bromo-2-methylpropane are 1.24
1 mole of naphthalene reacts with 1 mole of 2-Bromo-2-methylpropane
x moles of naphthalene react with 1.24 mole of 2-Bromo-2-methylpropane
x = 1 * 1.24/1
= 1.24 moles of naphthalene
Learn more about naphthalene here:-
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Answer:
The answer is A, the cell.
Explanation:
Cells are the basic units of structure and function in living organisms.
Answer:
scientists often communicate their research results in three general ways:
1) One is to publish their results in peer-reviewed journals that can be ready by other scientists.
2) Two is to present their results at national and international conferences where other scientists can listen to presentations
Explanation: