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When 1.00L of 1.00 M Ba(NO3)2 solution at 25.0°C is mixed with 1.00L of 1.00 M Na2SO4 solution at 25.0°C in a calorimeter, the white solid BaSO4 forms and the temperature of the mixture increases to 28.1°C. Assuming that the calorimeter absorbs only a negligible quantity of heat and that the density of the final solution is 1.0 g/mL, calculate the enthalpy change per mole of BaSO4 formed.
A patient needs to take 625 of ibuprofen twice daily. The pills in the bottle are each 250. . How many pills does the patient need to take each time she wants the 625 dosage? Assume that these pills are scored and can be cut in half if necessary.
If He(g) has an average kinetic energy of 4610 J/mol under certain conditions, what is the root mean square speed
A flask contains 0.230 mols of liquid bromine Determine the number of bromine molecules present in the flask.
The atomic orbitals of two iodine atoms combine to form the diatomic molecule. Use the periodic table to determine the atomic orbitals that overlap to form the molecule and the symbol of the noble gas that has the same electron configuration as th..
A concentrated sulfuric acid solution is 74.0% H2SO4 by mass and has a density of 1.66 g/mL at 20°C. (MW of H2SO4 is 98.0 g/mol.) The molality of the H2SO4 solution is ?
At 9.°C and 1.40 atm pressure, a sample of helium gas occupies a volume of 5.10 L. The sample is compressed and heated to 60.°C. Calculate the final pressure of the sample, if the final volume is 3.64 L.
Alkenes contain double bonds while alkynes contain triple bonds, Naming compounds containing double as well as triple bonds
How many grams of water can be cooled from 45 C to 23 C by the evaporation of 63 of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g . The specific heat of water is 4.18 J/g*K .)
If fuel mixtures are required to contain 3.0 oxygen by mass, how many grams MTBE must be present in each 110 gasoline.
The combustion of an organic compound releases 35.6 kJ of energy and causes the temperature of a constant volume calorimeter to increase by 4.76 °C .
A gas occupies 4.04 L at 860 torr and 10C. What volume will it fill if the pressure is changed to 731 torr and the temperature is raised to 43C
If the average human body discharges 925.0g CO2 per day, how many moles of NaOHare needed each day for each person in the spacecraft?( 42.04 mol NaOH)
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