Calculate the number of joules required to melt benzene
Pure benezene has melting point of 5.5 degree celsius. change in heat for benzene is 9.87 KJ/Mol. Calculate the number of joules required to melt 43.6g benzene at 5.5 degree celsius.
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When 1.5173 g of an organic iron compound containing C, H, O, and Fe was burned in O2, 2.838 g of CO2 and 0.8122 g of H2O were produced. In a separate experiment to determine the mass % of iron, 0.3355 g of the compound yielded 0.0758 g of Fe2O3.
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A mixture contains 76.5 % NaCl, 6.5 % MgCl_2, and 17.0 % Na_2SO_4 by mass. What is the molarity of rm Cl^- ions in a solution formed by dissolving 7.40 g of the mixture in enough water to form 490.0 mL of solution?
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