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Diethyl ether, used as a solvent for extraction of organic compounds from aqueous solutions, has a high vapor pressure which makes it a potential fire hazard in laboratories in which it is used. How much energy is released when 100.0 g is cooled from 53.0°C to 10.0°C?
boiling point34.5°C
heat of vaporization351 J/g
specific heat capacity, (CH3)2O(l)3.74 J/(g·K)
specific heat capacity, (CH3)2O(g)2.35 J/(g·K)
Question- Part 1) A 0.030 M solution was prepared by dissolving dipotassium cysteine, K2C, in water. Then 40.0mL of this solution was titrated with 0.060 M HClO4. Calculate the pH at the first equivalence point.
A solution is prepared by mixing 250 mL of 1.00 M CH3COOH with 500 mL of 1.00 M NaCH3COO.
A molecule of unknown structure has a molecular formula of C9H8O2. In the infrared spectrum there are absorptions at 1761, 1145, and 761 cm-1. In the 13C NMR spectrum there are absorptions at. 168.4, 152.0, 128.2, 128.0, 124.3, 122.8, 116.8, 29.1 ..
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a 125 g metal block at a temperature of 93.2 degrees celsius was immersed in 100 g of water at 18.3 degrees celsius.
For the reaction SO3+H2O yields H2SO4, how many grams of sulfur trioxide are required to produce 4.00 mol of sulfuric acid?
the molecular weight of citric acid is 0.030m. how many grams of citric acid molecular weight 192 are present in a
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