What Was the Temperature of the Universe When the Recombination

question 51

Multiple Choice

What was the temperature of the Universe when the recombination took place that produced the cosmic background radiation we observe today

• A)about 2.7 K
• B)about 300 K
• C)about 3000 K
• D)about 3 million K
• E)about 3 billion K

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Definitions:

Molecular Formula

A representation of the number and type of atoms in a molecule, without indicating how they are bonded together.

Molecule

The smallest unit of a chemical compound that can exist; composed of two or more atoms bonded together.

Conjugate Acid

A species formed by the reception of a proton by a base, in other words, it is the base with a hydrogen ion added to it.

Methanol

A simple alcohol with the formula CH3OH, known for being a volatile, colorless, and flammable liquid.