Answer:
it mean that they real self is secret or they keeping it private
Step-by-step explanation:
it's simple it's really easy so the answer is 2.0 1682
The half life of the substance is 6.92 days.
<h3>What is the Half life ?</h3>
Half life can be defined as the time required to reduce the concentration to half of its initial value.
Here the equation given is

The concentration will reduce to half therefore

so,

ln 0.5 = - 0.1001 * t(1/2)
-0.693 = -.1001 * t(1/2)
t(1/2) = 6.92 days.
Therefore the half life of the substance is 6.92 days.
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161%
Step-by-step explanation:
They are asking percentage so we know we going to ×100%
4943 AS A PERCENTAGE OF 3076

161%