The Radioactive Element Polonium Decays According to the Law

question 214

Short Answer

The radioactive element polonium decays according to the law , where Q​₀ is the initial amount and the time t is measured in days. If the amount of polonium left after 280 days is 80 mg, what was the initial amount present?
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__________ mg

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Definitions:

Quotas and Tariffs

Quotas and tariffs are trade policies where quotas limit the quantity of goods that can be imported, and tariffs are taxes imposed on imported goods to make them more expensive.

Foreign Governments

The governing bodies or authoritative administrations of countries other than one's own.

Import Quota

is a limit on the quantity or value of a certain good that can be imported into a country, typically applied to protect domestic industries.

Trade Restrictions

Measures such as tariffs, quotas, and embargoes imposed by governments to control and limit the volume or value of goods and services that are traded across borders.