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A Cu/Cu^2+ concentration cell has a voltage of 0.20 V at 25 C. The concentration of Cu^2+ in one of the half-cells is 1.5×10-3 M. What is the concentration of Cu^2+ in the other half-cell? (Assume the concentration in the unknown cell to be the lower of the two concentrations.)
Calculate the mass of Sodium Nitrate required to prepare 50cm3 of 0.2 moll-1 solution
Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. Predict the effect (shift right, shift left, or no effect) of the indicated volume change.
If the rate of appearance of oxygen (?[O2]/?t) is 6.0 x 10-5 M/s at a particular instant, what is the value of the rate of appearance of ozone (-?[O3]/?t) at this same time
How much heat (in kJ) is required to warm 16.0g of ice, initially at -11.0 C, to steam at 112.0 C? The heat capacity of ice is 2.09 J/g*C and that of steam is 2.01 J/g*C.
Write the equation for a nonspontaneous reduction-oxidation reaction involving the transfer
What volume of 0.140 M Hydrochloric acid is required to neutralize 2.68g of Magnesium hydroxide.
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons. Show the formal charges of all atoms in the correct structure.
which of the following shows the acids in order from strongest to weakest? The order of atomic radii is I > Br > Cl
Describe what will be observed when a mixture of composition x_b=0.8 is heated, at each stage giving the number, composition, and relative amounts of the phases present.
Consider one mole of a monatomic ideal gas at 300 K that undergoes a free expansion from a volume of 1 m^3 to 10 m^3. a) How much does the chemical potential of each molecule in a gas change?
According to the following reaction, what volume of 0.244 M KCl solution is required to react exactly with 50.0mL of 0.210 M Pb(NO3)2 solution?
how many miligrams of concentrated sulfuric acid (H2SO4) [having the strength is 18 M], are required to prepare 750 ml of 3.0 M
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