Air Is 79% N₂ and 21% O₂ by Volume

question 1

Multiple Choice

Air is 79% N₂ and 21% O₂ by volume. Calculate the density of air at 1.0 atm, 25°C.

• A) 1.18 g/L
• B) 2.46 g/L
• C) 0.590 g/L
• D) 14.1 g/L
• E) none of these

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Microwave Oven

A kitchen appliance that heats and cooks food by exposing it to electromagnetic radiation in the microwave frequency range.

Frozen Food

Food that has been subjected to freezing and is stored at extremely low temperatures to preserve its freshness, taste, nutritional value, and shelf life.

Opportunity Cost

The financial impact of rejecting the subsequent preferable alternative while deciding.

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