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In 2009, a team from Northwestern University and Western Washington University reported the preparation of a new "spongy" material composed of nickel, molybdenum, and sulfur that excels at removing mercury from water. The density of this new material is 0.20g/cm^3, and its surface area is 1242m^2 per gram of material. 1. Calculate the volume of a 35.0mg sample of this material. 2. Calculate the surface area for a 35.0mg sample of this material. 3. A 10.0-mL sample of contaminated water had 7.748mg of mercury in it. After treatment with 10.0mg of the new spongy material, 0.001mg of mercury remained in the contaminated water. What percentage of the mercury was removed from the water? 4. What is the final mass of the spongy material after the exposure to mercury?
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.120 M HCIO (aq) with 0.120M KOH (aq)
LiI has a lattice E of -7.3x10^2 kJ/mol and a heat of hydration of -793kJ/mol. Heat of solution is -60kJ/mol. Determine how much heat is evolved
the equilibrium constant for a chemical transformation can be predicted from its stoichiometric coefficients whereas the rate law must be determined experimentally.
What mass of liquid water at room temperature (25 C) can be raised to its boiling point with the addition of 31.0 kJ of energy
The product of the final step in the synthesis below are acetone and acetaldehyde. What are the identities of compounds A and B?
According to Raoult's law, which statement is false?
Write a detailed mechanism for this reaction that accounts for the net retention of detailed mechanism for this reaction that accounts for the net retention of configuration when Ag+ and a low concentration of hydroxide are used.
Hydrogen fluoride is a highly reactive gas. It has many industrial uses, but the most familiar property of HF is its ability to react with glass. As a result, HF is used to etch glass and frost the inner surfaces of light bulbs.
V = 4.55 mL at 147 atm. What is the pressure if the volume changes to 10.0 mL?
calculate delta H1 and delta H2 and heat capacities of the calorimeter plus salt solution.
The equation for the energy of the electron in the hydrogen atom is given in your text(s) as E= - 2.18 x 10^-18J x (1/n_f^2 - 1/n_i^2). However the actual equation
How many grams of potassium chlorate decompose to potassium chloride and 510. mL of O2 at 128°C and 652 torr?
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