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What is the purpose of ethylene glycol in this chemical experiment? why is it chosen specifically for this reaction? What is the purpose of using water to rinse off the crude crystals?
When 1 mol of a gas burns at constant pressure, it produces 2414J of heat and does 4kJ of work. 1. Identify \Delta E for the process. Express your answer using one significant figure.
C6H6 gas is burned in the presence of excess oxygen. What volume of liquid water could be condensed from combustion of 12.0 moles of Benzene (C6H6)? Assume density of water 1.0 g/mol.
Predict the partial vapour pressure of HO above its solution in liquid germanium tetrachloride of molality 0.10 mol kg-I
A certain weak base has a Kb of 7.80 × 10-7. What concentration of this base will produce a pH of 10.16
When adjusted for any changes in and with temperature, the standard free energy change at 2400 is equal to . Calculate the equilibrium constant at 2400.
Calculate [OH-] and pH in a solution in which dihyroden phosphate ion, H2PO4-, is 0.355M and hydrogen phosphate ion, HPO4 2- is
Water autoionizes to produce hydronium ion and hydroxide ion. The product of the concentrations of these ions equals the water autoionization constant, Kw. This ionization constant depends on temperature, the enthalpy change, and the entropy chang..
How many moles of Barium nitrate must be added to 325mL of 0.20M Iron (III) nitrate to increase the concentration of nitrate ions in the solution to 1.25M.
10 mg of magnesium metal and 30 ml of hydrochloric acid are added to 300 ml of water and hydrogen gas is eveloved. The reaction is as follows: Mg + 2HCl -> H2 + Mg2+ (aq) + 2Cl- (aq). Calculate the limiting reactant.
calculate the amount of heat kcal released when 50.0g of steam at 100 degrees celcius hits the skin condenses and coos
Assign absolute configurations to the chiral carbons n one of your Fischer projections. Indicate which of the compounds you have drawn would be optically active. Explain your reasoning.
a buffer ph 3.70 was prepared by mixing 1.00 mole of formic acid and 1.00 mole of sodium formate to form an aqueous
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