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2.362 grams of an unknown hydrate are heated until all the water is removed.The anhydride reside weight 2.015 grams.Calculate the percentage of water in this hydrate
What is frequency of chemical shift at 1.25 ppm if 400 MHz NMR spectrometer is used
A 10.1 g sample of CaCl2 is dissolved in 119 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C·..
What would the temp change if the gas were heated with the same amount of energy in a container of fixed volume? (assume the specific heat capacity of N2 is 1 J/gK)
which of these compounds will be the most polar and which of the compound will have the largest London forces?
A local radio station can be tuned in by dialing your radio to a frequency of 101.5 MHz. Calculate the wavelength. (Hint: MHz means 1 x 106 Hz.)
What product results from the reaction of hexyl bromide and sodium ethoxide?
What is the molar concentration of the solution of 37.5g Ba(MnO4)2 per Liter? What is molar concentration with respect for each ion, Ba2+ and MnO42-
Consider the following equilibrium process at 700°C. 2H2(g)+S2(g) 2H2S(g) Analysis shows that there are 2.50 moles of H2, 1.35 10-5 mole of S2, and 8.70 moles of H2S present in a 12.0 L flask. Calculate the equilibrium constant Kp for the reactio..
What mass of Aluminum is produced when 0.5 mole of Al2S3 is completely reduced with excess H2?
Does a reaction with a delta H of 14kj/mol and a delta S of 150 J/molK at 298K favor reactants or products
If carbon dioxide gas is collected over water at 25°C and 775 torr, what is the partial pressure of the CO2? The vapor pressure of water is 23.8 torr at 25°C.
Determine the rate law and the value of k for the reaction at 25oC
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