Which of the following is a mixture?

salt water

carbon dioxide

water vapor

oxygen gas

Option (a) is the correct answer.

Explanation:

A substance in which two or more elements are mixed together but these substances do not combine chemically to each other is known as a mixture.

For example, salt in water is a mixture as salt completely dissolves in water.

Whereas in carbon dioxide, carbon atom reacts chemically with oxygen atom. So, it is not a mixture.

Similarly, water vapor and oxygen gas are both compounds as they contain atoms which are present in similar composition.

Thus, we can conclude that out of the given options salt water is a mixture.

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.