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Epsomite is a mineral found in Epsom, England and is commonly used in bath salts. Its chemical formula is MgSO4•7H2O. Calculate the total number of ions in a single crystal of epsomite. Assume a crystal is cube?shaped with a length of 75.0 ?m. Solid epsomite has a density of 1.68 g/cm3.
The thermogram for the reaction is depicted below. The calorimeter constant is 28.1 J/ Celcius. Both solutions were initially at 21.31 Celcius. Calculate Delta Hrxn for the reaction.
calculate the vapor pressure of the pressure cooker if the temperature inside the pressure cooker is 119 degree celcuis.
A 15.00 mL sample of unknown concentration of sulfuric acid is precititated with excess lead(II) nitrate and a precipitate of lead(II) sulfate is collected.
determined its current level of YAN to be 120 ppm N. If each gram of DAP adds 0.21 gram of N to the must, how much DAP is needed?
Calculate the molarity of a solution of glycerol made by dissolving 34.000 mL glycerol at 15 C in enough water to make 300.00 mL of solution.
Rate of reaction for 8H2S +4O2 -> 8H2O + S8, if started with 21.35g of H2S and 15.36g of O2. What is the limiting reactant and how much S8 can be produced.
If the volume of the container is reduced to 15.0 L and the pressure remains at 760 mm Hg total pressure. Calculate the temperature of the gas mixture
classify the reactions below as synthesis, decomposition, single replacement(cationic or anionic) or double replacement
1-bromobutane was added to a solution of sodium iodide in acetone. One of the possible side products of this reaction is dibutyl ether. Provide the mechanism of thus molecule.
What chemical tests might be used to distinguish between pentanal and 2- pentanone; between benzyl alcohol and diphenylmethanol?
write the chem equation for the reaction which occurs when solutions of potassium sulfide and iron (II) chloride are mixed.
Barium imparts a characteristic green color to a flame. The wavelength of this light is 551nm. Determine the energy involved in kj/mol.
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