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Write three reactions for the oxidation of pyrite and explain how these can result in the production of acid waters that are enriched in trace metals and metalloids.
When 1 mol of a gas burns at constant pressure, it produces 2414J of heat and does 4kJ of work. 1. Identify \Delta E for the process. Express your answer using one significant figure.
A sample of blood plasma occupies .550 dm3 at 0 degrees C and 1.03 bar, and is compressed isothermally by 0.57 per cent by being subjected to a constant external pressure of 95.2 bar. Calculate w.
A 0.2861 gram sample of an unknown acid (HX) needed 32.63 mL of0.1045 M NaOH for neutralization to a phenolphthalein endpoint. Explain what is the molar mass of the acid. If this unknown acid had the formula H2X
In VSEPR (Valence shell electron pair repulsion) theory, what information about a central atom do you need in order to predict the shape of a molecule
The measured cell voltage is 0.0841 V and the Pt | H2 | H+ half-cell is the cathode. Standard reduction potentials are given on the next page. (a) Draw a diagram of the electrochemical cell, labeling all electrodes and solutions. (b) What is the p..
The vapor pressure of benzene (C6H6) is 40.1 mm Hg at 7.6 C. The delta H vap=31.0 KJ/mol, what is benzene's vapor pressure at 60.6 C?
sodium azide, a compound containing only sodium (Na) and Nitrogen (N), is used as a propellant for inflating airbags in some automobiles. A sample of sodium azide was weighed into a crucible.
Magnesium oxide (MgO) forms when the metal burns in air. (a) If 1.25 g of MgO contains 0.754 g of Mg, what is the mass ratio of magnesium to oxide
Compare and contrast the accuracy and precision of at least three types of measurements used in your life
Consider that a certain wastewater treatment plant returns 4.55 million gallons per day of treated water into a local stream, and that 2.2 mg of chlorine are added to each liter of treated water for e. coliremoval.
A mixture initially contains , , and in the following concentrations: = 0.500 , = 1.40 , and = 0.600 . The following reaction occurs and equilibrium is established: At equilibrium, = 0.350 and = 0.750 . Calculate the value of the equilibrium consta..
Imagine that a chemist has cyclohexanone, triphenylphosphine, butyllithium, and 1-bromopropane. Draw the chemical structure of the alkene that you could make using these reagents in a synthesis that involves the Wittig reaction.
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