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A 65.5-g piece of lead at 91 °C was immersed into 50.0-g water at 25.0 °C. The water temperature rose to 27.5 °C. Calculate the molar heat capacity of the metal.
which gas sample contains the largest number of mole?
Calcium carbonate reacts with hydrochloric acid to make calcium chloride and water and carbon dioxide. How many ml of carbon dioxide at 18 degrees Celsius and 715 mm Hg can be generated from 87 grams of calcium carbonate
lead is found in earths crust as several different lead ores. suppose a certain rock is composed of 38.0 pbsgalena 25.0
At 25 °C only 0.0420 mol of the generic salt AB3 is soluble in 1.00 L of water. What is the Ksp of the salt at 25 °C?
Assuming the solution has a heat capacity of 4.18 J/°C·g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
The blank solution used to calibrate the spectrophotometer is 10.0mL of 0.2M Fe(NO3)3 diluted to 25.0mL with 0.1M HNO3. Why is this solution preferred to simply using de-ionized water for the calibration
Two particles with charges q1 and q2 are separated by distance d. Rank these scenarios according to the magnitude of the electrostatic (coulombic) potential energy.
Calculate the amounts of reactants requires to produce 21.8 grams methyl benzoate assuming an 80% yield.
What is the final temperature of the water and pieces of metal?
Based on the sign of E°cell, classify these reactions as spontaneous or nonspontaneous as written. Assume standard conditions.
What you need to know about Problems, The Ksp of La(IO3)3 is 1.0×10-11. Using activities, what is the molar solubility of La(IO3)3 in a 0.050 M solution of NaNO3?
A gaseous system undergoes a change in temperature and volume. What is the entropy change for a particle in this system if the final number of microstates is 0.808 times that of the initial number of microstates
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