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A:how many valance electrons does calcium fluorine have? B: what is its empirical formula? c: what is its lewis structure?
Which response gives all of the members of the following list that are basic salts and none that are not basic salts?
A protein biochemist attempted to determine the amino acid sequence of a decapeptide. Use the results from the trypsin, chymotrypsin, and cyanogen bromide treatments to suggest the amino acid sequence of this decapeptide.
Describe how you would purify p-nitrobenzoic acid from a mixture of a 9.0 g of p-nitrobenzoic acid and 2.0 g of o-nitrobenzoic acid using recrystallization.
The decomposition of hydrogen peroxide is first order in H2O2. 2H2O2 -----> 2H2O + O2 The rate constant for this reaction at 20 C is 1.8 * 10^-5 s^-1
A quanity of oxygen gas was collected over water at 30 c in a 475 mL container. The pressure in the container was measured to be 105 kPa. How many grams of oxygen gas were collected?
Galvanized nails are iron nails that have been plated with zinc toprevent rusting. The relevant reaction is For a large batch of nails, a manufacturer needs to plate a totalzinc mass of 1.70 on the surface to get adequatecoverage.
determined that each molecule of the unknown base could accept two protons. What is the molar mass of this unknown compound?
provide the newman projections across the c2-c3 bonds for the major conformers after drawing the zig-zag structures of
How many hours will it take to produce 61.0 kg of Al metal by the reduction of Al3+ in an electrolytic cell using a current of 484 amps?
How many liters of NO(g) can be made from 17.57 L of O2(g) and 16.55 L of N2(g) at STP?
Calculate the overall energy change in kilojoules per mole for the formation of CaCL(s) from the elements. The following data are needed
The temperature of 2.00 moles of Ne(g) is increased from 25 C to 200 C at constant pressure. Calculate the change in the entropy of Neon.
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