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1.70 g of NH4NO3 is mixed with 79.0 g of H2O In a coffee-cup calorimeter, at an initial temperature =25.00 degree celsius. the final temperature of the calorimeter contents = 23.67°C After dissolution of the salt,. heat capacity of solution = 4.18 J/°C·g ( assuming no heat loss to the calorimeter) calculate the enthalpy change for the dissolution of NH4NO3 and expree your answer in units of kJ/mol.
In which compound does sulfur have the highest oxidation number a)Na2S2O3 b)NaHS c)H2S d)KHSO3 e) CuSO4
find out that how many mL of this suspension must be given to an infant with 21lb weight if the recommended dose =10 mg/kg body weight?
Determine how much heat (in kJ) is needed to warm 12.0g of ice, that is initially at -10.0 ° C, to steam at 114.0 ° C? The heat capacity of ice is 2.09 J/g⋅ ° C and that of steam is 2.01 J/g⋅ ° C.
Find the partial pressure and concentration of Nitrogen, Oxygen, and Carbon dioxide.
Calculated what is the pressure in atm using the van der Waals' equation for Oxygen gas under these conditions? For O 2 , it is given a = 1.360 L2atm/mol2 and b = 3.183E-2 L/mol.
Water supply in a city is fluoridated by adding NaF. The preferred concentration of F- is 1.6ppm.calculate the amount of Naf in milligrams should be added per gallon (treated water) if the water supply is 0.2 ppm in F-?
Application of ideal gas law - How high can you raise the temperature of the gas without bursting the vessel?
Calculate the standard free energy change for the process N2O5(s)-->N2O5(g) at 25 0C if Vapor pressure of N2O5 at 7.5 degrees C is 100mmHg, and the solid sublimes at a pressure of 1.00 atm at 32.4 0C.
Compute how many ml of C2H3NaO2(0.2 M) need to be added to 200 mL of 0.1 M CH3COOH to make a buffer of pH 5 and also find out what would be the total concentration of C 2 H 3 O 2 be in this (acetate + acetic acid) solution ?
Prepare the molecular formula for given compounds and determine the amount of molecules present and write the molecular formula and determine how many grams of each you have
To determine the volume of a gas using ideal gas law and evaluate the number of moles of a gas using ideal gas law.
Find out the Celsius temperature of 2.49 mol of gas contained in a 1.00 L vessel at 1.8 atm pressure.
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