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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.
How close to the goal can the hare let the tortoise approach before resuming the race, which the tortoise wins in a photo finish? Assume that, when moving, both animals move steadily at their respec
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?
An 9.00 {rm kg} point mass and a 14.0 {rm kg} point mass are held in place 50.0 {rm cm} apart. A particle of mass m is released from a point between the two masses 14.0 {rm cm} from the 9.00 {rm kg}
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 .
What potential difference between the plates will cause the thread to assume an angle of 30.0 degrees with the vertical?
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.
The charge is uniformly distributed within the volume of each sphere. What is the magnitude of the electric field midway between the spheres? What is the direction of the electric field midway betwe
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
A parallel-plate capacitor whose plates are separated by 2.00 mm is charged by a 455 volt potential difference. What is the energy density of the field between the capacitor plates?
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.
The dielectric of a parallel-plate capacitor is to be constructed from glass that completely fills the volume between the plates. The area of each plate is 0.50 m^2 (a) What thickness should the gla
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.
What is the coefficient of kinetic friction between the skier and the horizontal surface?
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).