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0.05 g of a commercial sample of KClO3 on decomposition liberated just sufficient oxygen for complete oxidation of 20 ml CO at 27 oc and 750 mm pressure . calculate % KClO3 in sample.
Silicon Carbide is a hard substance used as an abrasive. it is prepared by heating SiO2 and carbon at high temperatures SiO2 + 3C = SiC + 2 CO determine the limiting and excess reactant.
draw the structure of a compound C5H8O that reacts with 2,4-dinitrophenylhydrazine, decolorizes bromine in dichloromethane, but does not give a positive iodoform test.
An Antifreeze mixture is 11.0-m ethylene glycol solution. Water is the solvent and it has a mass of 800g. What is the mass of the solution
A. Using the following mean bond enthalpy data to calculate dH of the reaction:.C3H8(g) + 5O2(g) = 3CO2(g) + 4H2O(g)Bond Mean enthalpy(kJ mol-1)C-C 348O=O 496
How many grams of Ca metal are produced by the electrolysis of molten CaBr2 using a current of 30.0 amp for 10.0 hours
A total of sixteen grams of steam at the temperature of 120 degree Celsius is admitted to the system. Determine the phase composition and temperature at the time when equilibrium is reestablished?
A solution is made up by combining 50 mL of a 0.58 M acetic acid solution and 50 mL of a 2.18 M sodium acetate solution. What is the pH of the new solution?
What mass of iron is needed to supply the energy required to warm 15ml of water from 23 C to 37 C.
A trial of this decomposition experiment, using different quantities of reactants than those listed in the question above produced the following data: Volume of O2 produced at room conditions
Is the reduced form of cytochrome c more probable to give up its electron to oxidized cytochrome a or cytochrome b
gypsum is hydrated calcium sulfate. a 4.89 g sample of this hydrate was heated and after the water was driven off 3.87g
what happened when caco3 was combined with hydrochloric acid? was a chemical reaction obvious here ? what about naoh
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