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An aqueous solution of lead nitrate, Pb(NO3)2, is mixed with one of sodium cromate, Na2CrO4, resulting in the formation of a percipitate of lead chromate. Write a balanced net ionic equation for this percipitation reaction, showing all phases.
An aqueous solution has a vapor pressure of 84.0 at 50 . The vapor pressure of pure water at this temperature is 92.6 . What is the concentration of in mass percent?
Determine the theoretical and percent yields of ethanol if 684g sucrose undergoes fermentation and 349g ethanol is obtained?
Advantages and disadvantages of using Alternative Fuel and Would you consider buying one of these in the future? Why or Why Not and Why do you think there are not more of these vehicles in use?
Identify the oxidizing agent and reducing agent in the reaction. give breif rational for how this answer is arrived
Calculate the Calorimeter Constant if 25 g of water at 60C was added to 25 g of water at 25C with a resulting temperature of 35C?
calculate the change in entropy when 25KJ of energy is transferred reversibly and isothermally as heat to a large block of iron at (a) 0C and (b) 100c.
The empirical formula of a compound is found to be P2O5. Experiments show that the molar mass of the compound is 560g/mol. What is the molecular formula of the compound?
A rigid vessel contains 10 kg of steam. the steam is initially at 10 bar and 300 C. After a period of time the pressure in the vessel is reduced to 1 bar due to heat transfer with the surroundings.
How is the equilibrium yield of C6H12O6 affected by each of the following? 6 CO2(g) + 6 H2O(l) + HEAT C6H12O6(s) + 6 O2(g) (a) increasing PCO2 increases decreases no effect
The minimum frequency of light needed to eject electrons from a metal is called the threshold frequency, ?0. Find the minimum energy needed to eject electrons from a metal with a threshold frequency of 5.73 × 10^14 s-1.
Write and balance the equation for the reduction of iodate by hydrogen sulfite ions to give iodide and sulfate in basic
Consider the reaction CaCN2 + 3H2O ->CaCO3 + 2NH3 . How much NH3 is produced if 187 g of CaCO3 are produced?
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