Chemistry, 27.12.2019 23:31 xxtonixwilsonxx
A250-g sample of copper is heated to 100∘∘c and placed into a cup containing 370 g of water initially at 30.0∘∘c. ignore the container holding the water, assume no heat is lost or gained to the environment. 1) find the final equilibrium temperature of the copper and water. (express your answer to two significant figures.)
Answers: 3
Chemistry, 22.06.2019 19:40
Scientists have developed an explanation of a phenomenon from several verified hypotheses. the explanation has been confirmed through numerous experimental tests.which option best describes this explanation? a. scientific lawb. research questionc. hypothesisd. scientific theory
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Chemistry, 22.06.2019 22:30
The vapor pressure of ethanol is 1.00 × 102 mmhg at 34.90°c. what is its vapor pressure at 61.61°c? (δhvap for ethanol is 39.3 kj/mol.)
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Chemistry, 23.06.2019 01:50
Ablock of aluminum is dropped into a graduated cylinder with an initial volume of water at 75ml and the volumes rises to 90ml. if the block has a mass of 40.5 g what is its density ?
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Chemistry, 23.06.2019 07:30
Assignment directions: pick one of the following chemists and perform a bit of research on him/her. answer the following questions. alice hamilton rosalind franklin marie curie gertrude b. elion ada yonath henry cavendish robert boyle antoine lavoisier mario j. molina svante arrhenius
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A250-g sample of copper is heated to 100∘∘c and placed into a cup containing 370 g of water initiall...
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