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Chemistry, 22.06.2019 15:20
An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.
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Chemistry, 22.06.2019 18:00
What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; ÎŽhvaporization = 3.67 j/mol; ÎŽhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. â12.4 j â3.51 x 102 j 1.24 x 101 j 351 j
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Chemistry, 23.06.2019 01:00
Who examines and coordinates the cleanup of polluted sites?
Answers: 2
Radiowaves in the am region have frequencies in the range 550 to 1600 kilocycles per second (550 to...
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