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It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the water (dehydration). A 46.06 gram sample of a hydrate of MnSO4 was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, 37.19 grams of the anhydrous compound remained. What is the formula of the hydrate?
Analysis of corrosion mechanisms and preventative measures
the pressure of a sample of helium in a 1.00-liter container is .988 atm. What is the new pressure if the sample is placed in a 2.00 L container?
0.74 L of a 0.41 M solution is diluted to a final volume of 3200 mL. What is the resultant molarity?
How many grams of KCl are present in 250.0 mL of a 0.125 M solution? [Use formula weight: KCl, 74.55 g/mol]
If the sample reacted completely and produced 1931 mL of H2S hydrogen sulfide at 29.82 °C and 759.7 mm Hg, determine the mass percentage of Cadmium sulfide in the mixture?
What is the percent yield of a reaction in which 228. g phosphorus trichloride reacts with excess water to form 118 g HCl and aqueous phosphorus acid (H3PO3)?
A sample containing 0.0250 M concentration of a dye in a cell of 1 cm^2 cross section has a measured absorbance of 1.012 at 650 nm.
Determine the half-life for the reaction in Part B using the integrated rate law, given that the initial concentration is 1.75molxL^-1 and the rate constant is 0.0020 molxL^-1x s^-1 .
How many liters of water vapor can be produced if 13.3 liters of methane gas (CH4) are combusted, if all measurements are taken at the same temperature and pressure?
Application of ideal gas law - How high can you raise the temperature of the gas without bursting the vessel?
A portable photometer with a linear response to radiation registered 73.6 μA with a blank solution in the light path. Replacement of the blank with an absorbing solution yielded a response of 24.9 μA. Calculate
A solution is prepared by mixing 63.0 mL of 5.00 M HCl and 20.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+], [OH -], and the pH for this solution.
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