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What is the total number of liters of gas formed when 228g NH4NO3 is decomposed?
The atomic weight of a newly discovered el- ement is 10.600 amu. It has two naturally occuring isotopes. One has a mass of 10.000 and a natural abundance of 70.000%. What is the isotopic mass of the
What is the volume, in liters, of 0.100 g of C2H2F4 vapor at 0.0928 atm and 22.3°C?
The temperature of the resulting solution increased to 35 degrees C. How much heat is in kilojoules was released by this reaction?
What is the boiling point of a solution made by adding 6.79 g of magnesium chloride to 242.0 g of water?
Calculate the theoretical yield of C2H5Cl when 106 g of C2H6 reacts with 236 g of Cl2 assuming that C2H6 and Cl2 react only to form C2H5Cl and HCl.
Calculate delta Ssurr for the following reactions at 29 degrees celcius and 1 atm. C3H8(g) + 5O2(g) and 3CO2(g) + 4H2O(l) delta H = -221 kJ b.
A student takes 195. g of BaCl2, and reacts it according to the following equation: 3BaCl2 + Al2(SO4)3 → 3BaSO4 + 2AlCl3.
A pound of coffee beans yields 53 cups of coffee (4 cups = 1 ). How many milliliters of coffee can be obtained from 1 of coffee beans?
What would be the appropriate equilibrium temperature of a system obtained by adding 25.0 g of ice at 0 °C to 250.0 mL of "hot" (80 °C) coffee, assuming that the heat capacity.
For the neutralization reaction involving HNO3 and Ca(OH)2, how many liters of 1.55 M HNO3 are needed to react with 45.8 mL of a 4.66 M Ca(OH)2 solution?
A student mixes 347 mL of water and 254 mL of 8.70 x 10-5 M greenfood dye solution. What is the concentration of this new dilute solution of green food dye?
Keq = 2.01 at 500 K. A 1.000-L reaction vessel is charged with 0.990 mol of PCl5 and allowed to equilibrate at this temperature. what is the equilibrium partial pressure of PCl3 .
A solid metal is often described as having an array of positive ions in sea of electrons. write down the electronic structure of a magnesium atom and use it to explain what this phrase means.
Combustion reactions are exothermic. The heat of reaction for the combustion of cyclohexane, C6H12, is 936.8 kcal/mol. What is the heat of combustion for cyclohexane in kcal/gram
The galvanic cell Zn (s) ¦ Zn2+(aq) ¦¦ Ni2+(aq) ¦ Ni (s) is constructed using a zinc electrode that weighs 32.68 g. How long will it take for the cell to be completely discharged?
Consider the unbalanced equation for the combustion of hexane:
calculate the absolute error and the relative error in this student's result.
Consider the following cell notation: Fe(s) | Fe2+(aq) ¦ Ag+(aq) | Ag(s). Label the anode and the cathode and indicate the charge on each electrode.
A Chem 113 TA prepares a solution by dissolving 3.11 g of solid KOH in enough water to make 100.0 mL of solution. Calculate the molarity of K+ ions in this solution.
Cl2(g) + 2e- → 2Cl- (aq), Eo red = +1.359 V. Which is the strongest reducing agent? Name the elements or ions that can be reduced by Pb(s).
Write formulas for the compounds that form from {rm Rb} and each of the following polyatomic ion: {rm NO}_{3}^{-}, {rm SO}_{4}^{2-}, {rm PO}_{4}^{3-}
Heat of solution of lithium carbonate is -3.06 kJ/mol solute in 200 moles H2O. What effect would you expect increased temperature to have on the concentration of Li2CO3? Explain.
A reaction has a theoretical yield of 8.83 g of ammonia. the reaction gives off 10.24 L of ammonia measure at 52*C and 105.3kPa what was the percent yield of the reaction?
How many kilojoules of heat will be required to raise the temperature of the same sample of metal from 25 degrees celsius to 40 degrees celsius.