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a 1.150g of the hydrated salt ZnSO4. XH2O is dissolved in water and the sulfate ion is precipitated by adding an excess of BaCl2 solution. The mass of Pure and Dry BaSO4 precipitated obtained is 0.9335g. What is the formula of the zinc sulfate hydrate.
calculate mass of CCl 4 that formed if 1.5 moles of CH 4 react with 1.4 moles of Cl?
Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25.
Begin your explanation by identifying the intermolecular forces of attraction of the solute and the solvent.
What is the density of lead (in ) if a rectangular bar measuring 0.500 in height, 1.55 in width, and 25.00 in length has a mass of 220.9 ?
A 388 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 640. mmHg. Calculate the moles of Ar present.
Calorimeters and heat capacity, If 2.500 g of Mg is burned in a constant volume calorimeter with a heat capacity of 1.10 kJ/degrees Celsius containing 1.500 L
Calculate the Gibbs free energy (in kJ/mol) at 80 degrees celsius. Assuming that the change in enthalpy is negligible over this temperature range
Calculate how many kilojoules of energy are released when 27.86g of butane are burned.
A synthetic organic chemist wants to make 100.0 grams of benzoyl chloride C7H5OCl from benzoic acid C7H6O2 in the following reaction.
how many grams of sucrose C12H22O11 must be added to 522g of water to give a solution a vapor pressure 2.0mmHg less than that of pure water at 20 degrees celsius
Consider the mechanism of reduction of WO3. At least two mechamisms are possible to the formation of HxWO3 during intercalation of WO3
Determination of the partial pressures of the gases - Find the partial pressure of each of these gases in the final product mixture.
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