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What is the theoretical economy of heating A mixture of sodium carbonate and sodium bicarbonate ? sodium carbonate is the desired product and water and carbon dioxide are the undesirable wastes .
2NaHCO3 ----> Na2CO3 + CO2 + H2O
Small helium-neon lasers emit 2.94 mJ/s of light at 634 nm. How many photons does such a laser emit in one minute?
In this experiment the choice of precipating reagent is important. briefly explain what the consequences would be if excess 6M NaOH solution instead of 6M NH3 solution were used to seperate Fe3+ and Al3+ ions from Ca2+, Cu2+, and K+ions at pH9-10...
The ester ethyl p-nitrobenzoate is more reactive towards nucleophilic acyl substitution than ethyl p-methyoxybenzoate.
Determine the boiling point of an aqueous solution that is 2.30 m ethylene glycol (C2H6O2); Kb for water is 0.52 degrees celsius/m.
Bond Energies, Using the bond energies below, determine the value and sign of delta H for the
explain how to identify a molecular compound based on a: chemical formula and on a systematic name
A chlorine atom can occupy one of the nine possible sites. When a bromine is added to the system it can occupy one of hte eight sites not already occupied by the chlorine
a 50 ml solution containing NaBr was treated with excess AgNo3 to precipitate 0.2146g of AgBr. what is the molarity of NaBr in the solution.
If an unknown quantity of gas at a pressure of 1.2 atm, a volume of 31 liters, and a temperature of 87 C
What volume of carbon dioxide is produced at 1 atm and 87 °C when 1.6 liters of methyl alcohol burns? What volume of liquid water is produced in this reaction?
The Al2O3 does not react. If the sample residue weighs 2.489 g, what is the mass fraction of Fe2O3 in the original sample?
Determine the concentrations of Ag+ and C2O4- in a saturated aqueous solution of Ag2C2O4. Ksp = 3.5 x 10-11
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