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What mass of oxygen gas would be consumed by the complete combustion of 7.5g of a mixture of propane (C3H8) and butane (C4H10) in the mole ratio of C3H8 / C4H10 = 1.33?
28.80 mL of a 0.1726 mol/L EDTA solution is required to titrate a sample to the equivalence point. How many moles of divalent metal cations were in your sample
a mass of 48.5 g of a certain substanse can be disolved in 29.1 cm3 of water at 20 degrees celcius. Calculate the solubility of this substance per gram of water at the same temperature.
In which of the following reactions would increasing pressure at constant temperature not change the concentrations of reactants and products, based on Le Ch telier's principle
what is the molecular formula of a compound with a percentage composition 26.7 p 12.1 n and 61.2 cl and a molecular
compute the band gap for this semiconductor material after consideing an intrinsic semiconductor with a conductivity
list the names and chemical formulas for two allotropes of oxygen, three allotropes of phosphorus, and four allotropes of carbon
What is the hydronium-ion concentration in a 0.025 M solution of carbonic acid, H2CO3? For carbonic acid,
Determine the delta G standard state at 298 K from the following standard state values at T= 298, Determine the delta G standard state at 1000K. assume delta H is independent of temperature
Explain how the methylcyclohexene(s) can be distilled from the reaction mixture if the distillation temperature is kept below 100 degrees C.
If the pressure exerted by ozone in the stratosphere is 3 x 10^-3 and the temperature is 247 , how many ozone molecules are in a liter?
If 225ml of oxygen gas at STP were needed for an experiment, how many moles of H2O2 would be needed
Consider the following equilibrium process at 686°C: CO2(g) + H2(g) CO(g) + H2O(g) The equilibrium concentrations of the reacting species are [CO] = 0.050 M, [H2] = 0.045 M, [CO2] = 0.086 M, and [H2O] = 0.040 M.
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