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Compute the percent yield from the subsequent data.
A. The original mass of the copper sample was 0.121g
B. Mass of empty evaporating dish was 12.386g
C. Mass of evaporating dish and recovered copper was 12.499g
In a particular solution, [Cr3+]=3.9x10-4 mol/L. What is the minimum pH at which Cr(OH)3(s) will precipitate from this solution. Assume the temperature is 25oC. For Cr(OH)3(s), Ksp=6.3x10-31 at 25oC. Give your answer with three digits
a dry gas, held at a constant temperature, occupies a volume of 24.8 mL at 725 torr. What will be the volume of the gas at 800 torr
kc is 4.2 at 1650 degrees c. if 0.5 mole of h2 and 0.3 mole of co2 are injected into a 1.0 lflask what are the
Solid silicon and solid magnesium chloride forms when silison tetrachloride gas reacts with magnesium metal.
If 10.0 mL of blood plasma has a mass of 10.279 g and contains 0.870 g of protein, what is the mass/mass percent concentration of the sample
Calculate the volume of 1.00 M nitric acid needed to react completely with 25.0mL of 1.84 M calcium hydroxide
Give the formulas of any solid products formed when the sodium salt of each of the anions in the far-left column is treated separately with 1)NH3 and BaCl2 solutions and 2) HNO3 and AgNO3 solutions. If no Precipitate would form write no reaction.
Two 20.0-g ice cubes at -21.0 °C are placed into 235 g of water at 25.0 °C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts.
Concentrated hydrochloric acid, HCl, has a composition of 37.5 %. The solutes molar mass is 36.461 g/mol. You may assume the molar mass of water is 18.015g/mol.
What is the percent yield of CaO in the reaction CaCO3 yield CaO + CO2 if 5.33 g of CaO are obtained when 10.0 g of CaCO3 are used?
Write the cell reaction that occurs if the two Pt electrodes are shorted together. What is the standard potential of the cell?
what is the corresponding pressure difference between points A and B, in mmHg. At which point (A or B) is the pressure higher, and why? The temperature is 60 °F throughout
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