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Question- Melting 2.500 grams of platinum metal requires 284.25 Joules. The melting point of platinum is 1768 °C. What is the ?S for the melting of platinum metal in J/mol K?
How do I fix this, show all steps to describe the solution of above problem?
The labeling of acetone with 18O is catalyzed by both acid and base. Show Mechanisms for both reactions.
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 9.30 MJ of energy (in the form of heat) if the temperature of the sodium
A mixture of nitrogen and liquid ethanol in a closed constant-volume container has a partial pressure of 101 mm Hg of nitrogen and 66.2 mmHg ethanol at 27 C (300 K)
A solution of acetic acid is prepared in water by adding 11.1 g of sodium acetate to a volumetric flask and bringing the volume to 1.0 L with water. The final pH is measured to be 5.25. What are the concentrations of acetate and acetic acid in sol..
Will there be any precipitate in the following situations? If so, then what compound will be the precipitate? Justify your answers. A) 23 micrograms of strontium chloride, SrCl2 is dissolved in 1.50L of 0.0088M ammonium fluoride, NH4F solution
The ionic radius of Cs+ = 0.174nm, radius Cl-= 0.181nm, and the coordination number of each ion = 8. Calculate the lattice parameter, 'a', of CsCl, (CsCl is cubic).
An experiment shows that a 250mL gas sample has a mass of 0.434g at a pressure of 744mm Hg and a temperature of 27C. What is the molar mass of the gas?
A mixture of 2.0 mol of CO(g) and 2.0 mol of H2O(g) was allowed to come to equilibrium in a 10.0L flask at a high temperature. If Kc-4.0, what is the molar concentration of H2(g) in the equilibrium mixture
you need to produce a buffer solution that has a ph of 5.05. you already have a solution that contains 10 rm mmol
Question- The 1H-NMR of a compound with molecular formula C7H15Cl consists of two signals: 1.1 (singlet, integrating to 9 Hydrogens) and 1.6 (singlet, integrating to 6 Hydrogens). Propose a structural formula for this compound consistent with this..
Explain the dissolution of the sulfides of copper, bismuth and cadmium in nitric acid. Include ionic equations. If a yellow precipitate is obtained upon addition of hydrogen sulfide to an unknown solution of Group II cations, which ions are probably..
defined lead free paint as having less than 75mg of lead per 125mg of paint. How many parts per million of lead is this?
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