The Element Helium Was First Discovered and Identified as a Separate

question 212

Multiple Choice

The element helium was first discovered and identified as a separate element:

• A) in natural gas originating underground, from the spectrum emitted from a flame of burning natural gas.
• B) in rocks containing radioactively decaying elements such as uranium.
• C) on the Sun, in the spectrum emitted from its upper atmosphere.
• D) inside meteorites that had come from outer space.

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Definitions:

Exchange Rate Quotations

The price of one currency in terms of another currency, commonly used in international trade and investment transactions.

Direct Quotations

Refers to the use of exact words from a source material, enclosed in quotation marks, in a written document.

Foreign Currency Depreciate

Foreign Currency Depreciate occurs when the value of a foreign currency falls relative to another currency, impacting international trade and investments.

Inflation Rate

Inflation rate measures the rate at which the general level of prices for goods and services is rising, and, subsequently, purchasing power is falling.