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Describe how are you going to prepare a 250 mL solution of 5 (w/v)% NaCl.
If 3.4 mol of HI was placed in a 2.0 L container and allowed to reach equilibrium, what would the equilibrium concentrations be for H2(g), I2(g) and HI(g) if the Ke = 49? (5 marks)
H2(g) + I2(g) ⇆ 2HI(g)Determine the product(s) for the following reactions:
i) Acetone + Benzophenone (1:1 ratio)
ii) Cyclohexanone + cyclopentanone (1:1 ratio)
In an experiment, 0.791 g of acetone reacts with 1.044 g of benzaldehyde to produce experimental 1.00 g of dibenzalacetone. Calculate the theoretical and percentage yield.
For 8-20 X-ray diffraction using Cu K, (-1.54 A) radiation from cubic crystals 3.5 A). How many diffraction peaks are in the 0°<20<90° range?. Give the index of the lattice for each diffraction peaks
What is the theoretical yield in g of AgaS produced from the reaction?
Calculate the value for the mass defect of a mole of the following:
a. Boron – 15 (isotopic mass = 15.031088 u)
b. Carbon – 14 (isotopic mass = 14.003241 u)
c. Nitrogen – 17 (isotopic mass = 17.008449 u)
Calculate the pH after the addition of 50 mL of 0.10 M HCl in the titration of 50 mL of 0.10 M ammonia. [Ka for ammonium = 5.70 x 10-10]
What are some of the regulatory implications of bringing a pharmaceutical consisting of a mixture of diastereomers to the marketplace
What are the major factors in developing a cost-of-goods model for a high value-added chemical
