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As a side?reaction, organometallic reagents can react with atmospheric CO2 to produce metal carboxylates while the CaCl2 drying tube cannot prevent the incursion of CO2. Explain why this side?reaction is not expected to be problematic in this experiment
water is added to 25.0 ml of .716 mkno3 solution until the volume of the solution is exactly 500 ml. what is the
If the solubility of phthalic acid in nearly boiling water is 180 g/L, how much water is required to recrystallize 2.0 g of phthalic acid?
Show mathematically that addition of a common ion will decrease the ionization of a weak acid OR a weak base
a sample of gas contains 0.2000 mol of c2h4g and 0.2000 mol of br2g and occupies a volume of 13.7 l. the following
How many total moles of oxygen gas can be generated through this decomposition? B. If this oxygen is formed within the bottle described in question 1, what change in pressure would be predicted?
In a calorimeter, 10.0 g of ice melts at 0oC. The enthalpy of fusion of the ice is 334 J/g. How much heat was absorbed?
How much energy (in Joules) is required to heat 14.89 g of water from 11.9 oC to 49.2 oC ? Use 4.184 J/goC as the specific heat capacity of water.
when copper(II) hydroxide is heated it dehydrates, losing one molecule of water and forming copper(II) oxide.
The standard enthalpy of reaction, DH°rxn for C2H2(g) + 2 H2(g) ® C2H6(g) is -311.5 kJ mol-1. Determine the value of DE°rxn for this reaction
A solution is prepared by mixing 50.0 mL of 0.20 M Pb(NO3)2 with 50.0 mL of 1.5 M KCl. Calculate the concentrations of Pb2+ and Cl - at equilibrium. [Ksp for PbCl2(s) is 1.6 10-5.]
when 0.500 l of a 2.00 m solution of Pb(NO3)2 is mixed with an excess of 1.00m solution of Ki, how many grams lead (II) iodide are formed? ( molar mass: Pb(NO3)2= 331 g;KI 166g; PbI2 =467 g; KNO = 101 g
the trunk remains undistrubed for 13,750 years what percentae of the original c-14 is still present ? ( half life of c-14 = 5730)
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