A metal reacts with aqueous hydrochloric acid to producehydrogen. The hydrogen (H2) is collected over water at25°C under a total pressure of 0.9900 atm. The vaporpressure of water at this temperature is 0.0313 atm. Calculate the mass of hydrogen per liter of “wet” hydrogen above the water, assuming ideal gas behavior

Q: vapor pressure of water changes with perature, as shown here (C) P (torr) 21 187 22 198 23 21.1 24…

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Q: None

A: Please note that you should write the final answer in appropriate, significant figures.

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Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.