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A 34.3 gram piece of lead at 97.7 C is placed in a calorimeter containing water at 21.9 C. If the temperature at equilibrium is 27.6 C, what is the mass of the water?
Suppose a solution contains aqueous Hg2(NO3)2 . Write complete ionic equation to show the reaction of aqueous Hg2(NO3)2 with aqueous sodium chloride to form solid Hg2Cl2 and aqueous sodium nitrate. Express your answer as a chemical equation. Ident..
Calculate the equilibrium partial pressures of the products and reactants if PH2O= .442 atm and PCO = 5.000 atm at the start of the reaction. Assume the carbon is in excess.
Explain why the d-orbitals on a metal ion split (in energy) as they do in an octahedral crystal field.
A gas-filled balloon having a volume of 4.00 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°C and 3.00 multiplied by 10-3 atm, respectively. Calcula..
morphine c17 h19 no3 is often used to control severe post-operative pain. what is the ph of the solution made by
We were asked to determine the activation energy. That the Arrhenius equation is LnK= LnA-Ea/RT. nevertheless he didn't give us the rate constant "K" instead he gave us the rate. Explain how determine activation energy using the rate.
What causes cycloalkanes to have two less hydrogen atoms than similar alkanes that are open chain ones?
Problem- In the molecular structure of maleic acid and fumeric acid there are four H atoms. However, the compounds are diprotic and only dissociate two of the H atoms. In these compounds,
A glass window of width W = 1 m and height H = 2 m is 5 mm thick and has a thermal conductivity of kg = 1.4 W/m. K if the inner and outer surface temperatures of the glass are 15°C and -20°e, respectively, on a cold winter day, what is the rate of..
Approximately how many grams of KCl are there in 200 mL of a 4.0% by mass KCl aqueous solution? Assume that the density of solution equals that of pure water.
calculate w and delta e when one mole of a liquid is vaporized at its boiling point (80 degrees celscius) and 1.00 atm pressure. Delta H vaporization for the liquid is 30.7 kJ/mol at 80 degrees celscius.
What is the pH of a buffer prepared by adding 0.809 of the weak acid HA to 0.305 of NAH in 2.00 L of solution. The dissociation constant Ka of HA is of is (5.66 X 10^{-7})
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