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What is the molar mass of an unknown molecular compound is 3.42grams dissolved in 41.8 grams benzene begins to freeze at 1.17degree's C? The freezing point of pure benzene is 5.50 degree's Cand the freezing point depression constant, Kfp, is-5.12 C/m
The mass of 158mL of the gas, measured at 556 mm Hg and 25 degrees C is found to be .275 g. What is the molecular formula of the compound
What is the concentration of OH- in a solution that contains 0.225g of NaOH in 0.250L of solutio.
A particular element M has a heat capacity of 0.36 JgK and it forms an oxide that contains 2.9 grams of M per gram of oxygen What is the molar mass of the metal
why is it important to have gas laws relating to this hypothetical situation?
A closed container is filled with oxygen. The pressure in the container is 425 . What is the pressure in millimeters of mercury
how many grams of CaCl2 are needed to make 638.2 grams of a solution that is 28.5% (m/m) calcium chloride in water
question given the following heat capacities assume they are constant over the temperature range in consideration here
a satellite is placed in orbit 100 km above the surface of the earth radius 6370 km mass 5.98 x 1024 kg.a. what is
what is the balanced equation for the main reaction? equation for important side reactions? why was ethanol, not methanol, used as the organic solvent?
The activation energy of a certain reaction is 45.4kJ/mol. At 28 degrees celcius, the rate constant is 0.0150s^?1. At what temperature in degrees Celsius would this reaction go twice as fast?
The U.S. Food and Drug Administration lists dichloromethane (CH2Cl2) and carbon tetrachloride (CCl4) among the many chlorinated organic compounds that are carcinogenic (cancer-causing).
The composition by mass % of methyl alcohol, ethyl alcohol, n-Propyl alcohol and water in two solutions A and B are given below.
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