3). A 50.0 g sample of silver is heated to 1230C . It is placed in a cool water bath. The water has original temperature 20.00C. Eventually both the silver and the water end up at 23.00C. (Specific heats for silver and water are 0.24 J/g C and 4.184 J/g C, respectively) Determine the following:
a). the amount of heat released by the metal b). the mass of water used in the experiment

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water pollution kills aquatic life. aquatic life includes algae and other plant life that use photosynthesis. photosynthesis takes   c02 out of the air.  

c02is a greenhouse gas.

alchemy hadn't scientific methods of study, appeal to mysticism and fantasy, the knowledge of chemistry and physics were modest at that time.

alchemy was - but as new rules were discovered it either changed into chemistry or it became "unscientific".