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1) A calorimeter contains 28.0 mLof water at 11.5 degreesCelcius. When 2.10 g of X (a substance with a molar massof 79.0 g/mol) is added, it dissolves via the reaction X(s) + H2O(l) :::::::::> X(aq) and the temperature of the solution increases to29.0 degrees Celsius.
a) Calculate the enthalpy change,ΔH, for thisreaction per mole of X.Assume that the specific heat and density of the resultingsolution are equal to that of water [4.18J/g.Celcius and 1.00g/mL]and that no heat is lost to the calorimeter itsef, nor to thesurroundings.
When 2.8>g of NaOH were dissolved in 53.8>g of water in a calorimeter at 24.4oC, the temperature of the solution went up to 38.6oC. Find the value of delta H for one mole of NaOH.
consider radiation of wavelength of 8000 Angestroms, at a temprature of 1000 K. using a planck law, calculate the energy per unit volume
a metal sample weighing 45.0 grams and at a temperature of 99.1 degrees celsius was placed in 38.6 grams of water in a
Describes the reaction that can occur when dinitrogen tetroxide
15.0mL of 0.50 HCl is added to a 100.0mL sample of 0.200 M HNO2. What is the equilibrium concentration of NO2. ions. (Ka for HNO2= 4.0 x 10^-4)
Use the VSEPR model to predict the effective electron pair (electron cloud) geometry and the molecular structure for the following molecular species
How many mL of 6 M sodium hydroxide must be added to 5 mL of 1.5 M HCl to just react completely with all of the HCl
Calculate the amount of heat required to completely sublime 18.0g of solid dry ice (CO2 ) at its sublimation temperature
how do you find delta change H° of gaseous HCl with the following information: 1) N2(g) + 3H2 (g) > 2NH3(g) delta changeH°(rxn) = -91.8 kj 2) N2(g) + 4H2 (g) +Cl2 (g) > 2NH4Cl(s) detla changeH°(rxn)= -628.8 kj 3) NH3 (g) +HCl (g) >NH4Cl(s) delta c..
write a balanced chemical equation for the reaction that occures in the experiment (B) Give the net ionic equation for this reaction
Using Gas Chromatography results and mass of your product mixture, calculate the percent yields of both 1-Hexanol and 2-Hexanol.
A 1.80-g sample of phenol (C6H5OH) was burned in a bomb calorimeter whose total heat capacity is 11.66 kJ/°C. The temperature of the calorimeter plus contents increased from 21.36°C to 26.37°C. Write a balanced chemical equation for the bomb ca..
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