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Consider the following cell: Pt|H2(g, 0.645 atm)|H (aq, ? M)||Ag (aq, 1.00 M)|Ag(s) If the measured cell potential is 1.20 V at 25 °C and the standard reduction potential of the Ag /Ag half-reaction couple is 0.80 V, calculate the hydrogen ion concentration in the anode compartment.
A buffer that contains 0.55 M base, B, and 0.30 M of its conjugate acid, BH+, has a pH of 8.94. What is the pH after 0.0020 mol HCl is added to 0.25 L of this solution.
A copper refinery produces a copper ingot weighing 121 lb. If the copper is drawn into wire whose diameter is 8.00 mm, how many feet of copper can be obtained from the ingot.
A 1.17 g sample of an alkane hydrocarbon gas occupies a volume of 674 mL at 28°C and 741 mmHg. Alkanes are known to have the general formula CnH2n+2.
Calculate the number of kilograms of helium required to inflate a balloon with a volume of 100.000 L at a pression of 250 mmHg and atmospheric temperature of -35 ° C.
If the water in your house has 1000.0 mg/L of calcium carbonate dissolved in it, How many grams of sodium oxalate could you mix with 100.0 mL of that water before a precipitate would form.
Calculate the work done on a 2500. kg car in accelerating it from rest to a speed of 100. km/hr.
a 97 gram solution of silver nitrate contains 21 grams of AgNO3. what is the percent by mass of silver nitrate in this solution?
A sample mixture of CH4 and C2H6 weighing 0.732 g burned to give 2.064 g CO2. What is the mass of CH4 in the mixture.
Determine How many grams of NaOCl are in the solution if the percent by mass of the solute sodium hypochlorite, NaOCl, is 3.62%.?
the pH of a saturated solution of a metal hydroxide MOH is 10.85 calculate the Ksp for the compound
An equilibrium mixture of SO2,O2 and SO3 gases at 1500k is determined to consist of 0.244 mol/L SO2, 0.172 mol/L O2 and 0.56 mol/L SO3.
How many grams of methanol must be added to 7.50kg of water to lower its freezing point to -15.0^circ C? For each mole of solute, the freezing point of 1 {rm kg} of water is lowered 1.86 ^circ {rm C}
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