Alex heated water in a pan until the entire water changed in to vapor. The mass of the total vapor formed was 150g. what was most likely the mass of the water Alex headted and why?
175 g, water vapor formed is lighter then water
150 g, mass of the water remains the same when it changes state
175 g, some water molecules are destroyed during phase change
150 g, mass remains same during chemical change of water into vapor
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