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Assuming efficiency of 26.70 %, calculate the actual yield of magnesium nitrate formed 139.4 g of magnesium and excess copper (II) nitrate. Mg + Cu(NO3)2 -> Mg (NO3)2 + Cu
what is the major type of force that must be overcome to allow each of process below
Compute the molar mass of the noble gas krypton(Kr) in a natural sample, which is 2.2% 80 Kr (molar mass 79.91 g/mol),
Sketch the phase diagram of a pure substnace from the follwoing data. (A log P scale may help). There are two solid forms X and Y, which are both denser than the liquid, and Y is denser than X.
Derive an expression for (δU/δV)T for a gas that obeys the van der Waals equation of state.
In which reaction does the oxidation number of hydrogen change?
The density of silver is 10.5 g/mL. What is the mass (in grams) of a piece of silver with a volume of 23.6 mL
How many J of heat are necessary to raise the temperature of a 1.05-kg block of iron from 25.0 C to 88.5 C?
How do you calculate the rate of change of absorbance per minute over the first 3 minutes to get units, U/ml, total units and percent recovery?
Predict the rate of change in the concentration of N2O over this time interval. In other words, what is dt [N2O]/ dt?
Find the pH of a 0.15 M solution of ammonia, NH3. Kb = 1.8*10^-5
Calculate the approximate molarity of this solution from the volume, percent composition, and density.
Calculate the molar enthalpy change when mercury is cooled 10 K. The molar heat capacity of mercury is 27.8 J/K*mol
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