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When 0.100 L of 3.0 M H2S solution is added to a solution of 500 mL of 6.00 M Ba(OH)2 a reaction occurs according to the equation H2S(aq)+Ba(OH)2(aq)+BaS(s)+H(l)
A) what concentration of Ba(OH)2 solution is left after complete precipitation of BaS?
B) What is the mass of BaS Precipitated?
Calculate the molar heat of neutralization (in kJ mol-1). The heat capacity of the calorimeter is 10 cal/g·0C.
When doing a recrystallization, why is it important to allow the saturated solution to boil for ~1 minute and cool SLOWLY to room temperature before placing it in an ice-water bath?
In order to induce the error in the precision and accuracy section ,a) would the balance be registering masses too low or too high?
It takes 78.2 J of energy to raise the temperature of 45.6 g of lead by 13.3 oC. What is the specific heat capacity of Pb? What is the molar heat capacity of Pb.
The water level in a graduated cylinder initially at 216 rises to 287 after a piece of lead is submerged. What is the mass in grams of the lead?
At equilibrium the vessel is found to contain 0.566 g of H2. Calculate the equilibrium concentrations of H2, Br2, and HBr and Calculate Kc.
How many grams of KCl would be required to react with 420 mL of 0.42 M AgNO3 solution?
A molecule of chlorine dioxide (ClO2) at 25oC has a velocity of 306 m/s. What is the kinetic energy in joules of the molecule at this temperature?
What steps do you think need to be taken to prepare the blood sample so that it will be amenable to this type of analysis?
What are the equilibrium concentrations of each reactant and product? (All three substances are gases at 250 °C)
At a given temperture, of the following reaction has a Keq equal to 25. If 0.100 mol of both SO3 and NO were placed into a 1.00 L container, what would be concentration of SO3 at equilibrium?
Stellar nuclear fusion begins with 1H and ends with 56Fe. Younger stars fuse hydrogen to form 4He, while older, more massive stars fuse helium to form heavier elements.
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