Molecular formula-molar mass of the compound
A compound contains 69.94 percent iron and 30.06 percent oxygen. What is its molecular formula if the molar mass of the compound is 199.55 grams per mole
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How much heat in kilojoules is needed to convert 856 g of water 100 degrees celcius to steam at 126 degrees celcius? (the specific heat of steam is 1.99 J/g(C), the heat of vaporization of water is 40.70 kJ/mol).
A rotary drum filter with a filter area of 200 m^2 and a vacuum pressure of 75 kPa is to be used to remove cells from a fermentation broth.
When 64.5 g of HCl are allowed to react with 17.6 g of O2, 50.4 g of Cl2 are collected. Determine the limiting reactant, theoretical yield of Cl2 and percent yield for the reaction.
The vapor pressure of pure water at this temperature is 92.6 mmHg. What is the concentration of CaCl2 in mass percent?
The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.134 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 24.5°C, what is the minimum temperature reached by the solution?
Whats the thermochemical equation that represent the formation of butane?
In the preparation of the esters given in this experiment, the reaction product was extracted with 5% sodium bicarbonate solution in the isolation step. Why? What gas was evolved during this washing step? Write a balanced equation for the reaction
How many moles of oxygen react when 0.662 mol of methanol (CH3OH) are combusted in oxygen to produce carbon monoxide and water?
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Place each characteristic in the correct area on the Venn diagram, whether it corresponds to Australopithecus, Homo habilis, or both
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