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If 2 liters of a 4 M aqueous solution of zinc nitrate are reacted with an excess of an aqueous solution of sodium sulfide, determine the numbers of grams of the zinc sulfide should precipitate theor
Assume that the reaction for the formation of gaseous hydrogen fluoride from fluorine gas and hydrogen gas has an equilibrium constant which is having the 1.15 * 10 ^2 at a certain temperature.
An ionic solid which is having 25.0 g was dissolved in the 1.00 kg of H2O. The freezing point of the resulting solution was -1.59 ºC. Calculate the ionic solid?
At what temperature would the average speed of an O2molecule be equal to this escape speed? The speed that anybody of mass must have to escape from the earth is 1.07*10^4 m/s^-1. Have
Thylene glycol c2h6o2 IS used in some antifreeze mixtures protection against freezing to as low as -40 degree C is sought. Determine the numbers of quarts of ethylene glycol liquid density 1.11 g/ml
Determine the numbers of liters of ClO2, measured at 0.961 atm and 31 degrees Celsius, will be formed by the 283 L Cl2 atm and 21 degrees Celsius?
How can calculate the total number of moles of sodium contained in the 3.6 g of sodium chloride and 5.6 g of sodium sulfate. Enter answers in scientific notation of the form 2.1E2
How can calculate the binding energy per nucleon for the 45Sc nucleus given that the nucleus has an atomic mass of 44.9443894 when the atomic masses of a proton and neutron, respectively, are 1.007
Determine the pH of the solution after adding 5.00, 15.0, 20.0,22.0, and 30.0 mL of the acid. Combine this information with that in parts a-c and plot the titration curve.
The relative abundance of 40K is 0.0118% its half life is1.28x109 years, and its beta particles have an average kinetic energy of 0.55MeV. The beta decay of 40K that is a natural part o
Suppose .450atm of N2O5 is introduced into an evacuated the 2.00 L flask. At a particular temperature the first order gas phase reaction N2O5-> 2NO2 + 1/2O2 has a half-life for
The air enters at the ambient temperature of the atmosphere and must be heated to internal body temperature at an approximately constant pressure of 1.00 atm in our model.
Determine the initial product at the cathode when an aqueous solution of MgF2 is electrolyzed and how this can be the answer when there is no hydrogen involved in the reaction.
Determine the cell voltage for this reaction assuming the (Fe+2, Fe +3, Cr +3 are 0.1M)? Calculate the reduced and the oxidized? How can write the half reactions for each electrode.
Explain what mass of solid Aluminum hydroxide (Al(OH)3) can be made from the reaction of 250.0 ml of .200 M KOH and 75.0 ml of .500 MAl(NO3)3 ? Discuss in detail.
Estimate your weight if all the Oxygen in your body (=60% of all atoms) were Oxygen 18 instead of the Oxygen 16. Explain all the procedure in a full detail.
What is the partial pressure of each gaseous product if 10.0g of NH4NO3 explodes, determine the numbers of L of gas are generated at 25 degress C and 1 atm?
When 1,350 joules of heat is added the temperature raises by 3.5 degrees C. A Styrofoam cup calorimeter is calibrated by adding heat to the water in it with an electrical heater.
When water is boiled on the plane to make coffee, what is the temperature of the boiling water? The cabin of a commercial airliner is maintained at a pressure of 0.74 bar.
A sample which is having 4.00 g of a protein was dissolved in the water and the volume of the aqueous solution adjusted to the 100.00 mL. The osmotic pressure of this solution was 10.68 tor
2 NaNO3(s) -> 2 NaNO2(s) +O2(g). Heating a .1865-g sample of impureNaNO3 formed 24.6 mL of O2 gas, collected by the water displacement, at the 26.00C and a barometric
What are the rates of production of P4 and H2 in this experiment if, in a certain experiment, over a specific time period,0.0033 mol PH3 is consumed in the a1.7-L container each second
pH of 100mL of 0.250 M solution of acetic acid which is having 0.250 M of sodium acetate; pKa = 4.75, upon addition of the 5.0mL of0.10 M HCl
How can obtain the pH and concentrations of H+(hydrogen ion),K+, OH-,H2PO4-,HPO43-,PO43 from a 1.00L solution having the 0.0250 mol KH2PO4 and 0.030 mol KOH.
How can find the molarity of benzoic acid solution if the 14.3 ml of 0.00105m NaOH is needed to reach titration end point for the 25.0 ml of benzoic acid solution?