Chemistry, 06.03.2022 02:30 cameron12502
A 2.50 g sample of zinc is heated, then placed in a calorimeter containing 65.0 g of water. The temperature of water increases from 20.00℃ to 22.50℃. The specific heat of zinc is 0.390 J/(g •℃). What was the initial temperature of the zinc metal sample
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In 2002, the rare earth elements mine in mountain pass, california was closed because
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An uncovered pot of water lies out in the sun. which statements correctly describe what happens at the surface of the liquid water? 1. the vapor pressure remains constant regardless of the water temperature. 2. the vapor pressure is produced by water molecules that have evaporated. 3. the vapor pressure increases as the sun heats the water in the pot. 4. evaporation stops once the vapor pressure reaches a certain point. 5. evaporation and condensation both occur on the liquid’s surface.
Answers: 3
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