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Yannan Huang
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A 800 kg steel beam is supported by two ropes. Each rope has a maximum sustained tension of 6600 N. One of the ropes is 20
1 answer
1,140 views
The enthalpy of combustion of benzoic acid(C6H5COOH) which is often used to calibratecalorimeters, is −3227 kJ/mol. When 1.316
1 answer
1,237 views
