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Calculate the effective nuclear charge on a valence electron in a sulfur atom.
Please break down as simply as you can
Explain why a 1m solution of the compound FeCl2 in water has a lower freezing temperature than a 1m solution of KCl in water and what is the empirical formula
World energy supplies are often measured in the unit of quadrillion British thermal units (10^12 Btu ), generally called a "quad." In 2015, world energy consumption is projected to be 5.81 x 10^17Kj
The volume of Ba2+ required to reach the endpoint is 22.40 mL. What is the calculated molar mass of the sulfate present in bottle A
A 12.5% by mass solution of sodium chloride (NaCl) in water has a density of 1.115 g/mL at 20 degrees C. What is the molarity of this solution
In the experiment "Separation of the Components of a Mixture" A student found that her mixture was 13% NH4Cl, 18% NaCl, and 75% Sio2. Assuming that her calculations are correct, what did she most likely do incorrectly in her experiment
Question- A sample of gas at a pressure of 1.79 atm and a temperature of 21.2oC is heated to 48.5oC. If the gas expanded to 2.59L from 2.12L, what is the pressure of the heated gas
What peptide remains after two sequential Edman degradations of the pentapeptide Ser-Pro-Gly-Phe-Arg
Problem- For a certain reaction, you measure K273K = 0.245 and K305K = 145. What is delta H for the reaction?
Calculate the number of Rb-87 atoms in a 10.60 g sample of the naturally occurring isotope. b. A major line in the emission spectrum of rubidium has an energy value of 2.88X10-19 J. Calculate the wavelength, in nanometers, of light that correspond..
Suppose 317 mL of 4.14 M HCIO4 Solution is added to enough water to make a total of 7.70 L. What is the molarity of HCIO4 in this new solution?
Rank the electrons by relative energy within an atom of mercury.
What is the molarity of a solution prepared by dissolving 11.5g of solid NaOH in enough water to make 1.50L of solution?
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