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How many grams of methane [CH49g] must be combusted to heat 1.00 kg of water from 24.0 to 93.0, assuming H2O(l) as a product and 100% efficiency in heat transfer?
we will titrate 50.0ml of 0.200m nh3aq pkb 4.76 with 0.200m hclaq.a. what is the initial ph of 50.0ml of 0.200m nh3aq
A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 251{rm torr} . Pure pentane and hexane have vapor pressures of 425
Calculate the standard free-energy change for the following reaction at 25 degrees C. 2Au^3+(aq) + 3 Cr(s) 2Au(s) + 3Cr^2+(aq) delta G^degree= ? KJ/mol
The element is so highly unstable that no observations of its properties have been possible. Based on its position in the periodic table, propose two different reasonable valence electron configurations for this element.
Calculate the values for Z1 and Z11 for mercury (Hg) vapor at 40 degrees C at P = 0.10 atm. How does this quantity depend on pressure
Calculate the theoretical yield of C2H5Cl when 138 g of C2H6 reacts with 244 g of Cl2, assuming that C2H6 and Cl2 react only to form C2H5Cl and HCl.
Benzoic acid precipitated when the aqueous solution of sodium benzoate in beaker A was acidified. If benzoic acid failed to precipitate after acidification, how would you recover benzoic acid from beaker A
Hypochlorous acid is a weak acid with pKa= 7.41 suppose a 45.00ml sample of 0.240 M HOCL solution is titrated with a 0.250 M standard KOH solution. what is the PH of the equivalence point
A 4.305-gram sample of a nonelectrolyte is dissolved in 105 grams of water. The solution freezes at -1.23°C. Calculate the molecular weight of the solute. Kf for water = 1.86°C/m.
7.04 g of CuNO3 is dissolved in water to make a 0.300 M solution. What is the volume of the solution.
Draw the enantiomer of proline which would give rise to the absolute stereochemistry and draw a proposed catalytic cycle for the transformation and how does the catalyst activate the substrate
What is the molarity of a 15.5 m (m stands for molality) solution of HCl if the density of the solution is 1.33 g/cm^3.
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