Determine the temperature change that occurs when 10.6 g of potassium perchlorate is dissolved with enough water to make 102.3 ml of solution. (assume a heat capacity of 4.05 j/g⋅∘c for the solution and a density of 1.05 g/ml.)

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a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl