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Q. Determine the mass in gms for pure Ag sample that loses 2.88kJ if its temperature drops from 143 degree celsius to 28 degree celsius.?
Q. consider this chemical reaction ΔH = - 126 kJ mol-1, ΔS = 84 J K-1 mol-1 and find the temperature at which the reaction becomes spontaneous also consider the second reaction ΔH = 11.7 kJ mol-1, ΔS = 105 J K-1 mol-1 and find out temperature at which the reaction becomes spontaneous?
Find out the exact significant figures for each of the values - Indicate the number of significant figures
Explain the structure of the main mononitration product(s) of 3 bromo 1 nitrobenzen?
What will be the resultant pressure when the stopcock is opened?
Determine osmolarity of solution when 25.0 grams of aluminum chloride dissolves in 2.50 liters of H2O.
Compute the heat amount required to heat a 3.9kg gold bar from 28 degree Celsius to 68 degree Celsius. Given Specific heat capacity of gold = 0.128 J/g°C.
Design a tube and shell heat exchanger for the fluids and duty given for you and complete Project Management tasks
A rectangular beam made using concrete with f'c = 6000 psi and steel with fy=60000 psi has a width b= 20 in. The concrete modulus of rupture fr=530 psi. The elastic moduli of the concrete and steel are, respectively,
A student measures the standard enthalpy change for reaction (C2H4(g) + H2O(g) CH3CH2OH(g)) to be -52.8 kJ :Calculate the standard enthalpy of formation.
Determine how many moles of carbon dioxide should be added to the system to bring the equilibrium carbon monoxide concentration to 0.743 mol/L
Using a sample of 0.0355 gram of an unknown molecular compound is dissolved in 1.000 g of liquid camphor at 200.0°C. Calculate the molar mass of the unknown compound if the camphor freezes at 157.7°C upon cooling.
The state function to describe a particle on a sphere is given as Ψ=2sin^2(?)+cos?(θ).calculate the expectation value of its angular momentum about the z-axis, energy and the square of the total angular momentum L^2.
4.00g of H2SO4 solution was diluted with H2O and added with excess of cacl2, and The washed and dried precipitate of BaSO4 weighted 4.08g. Calculate percent H2SO4 in the original acid solution.
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