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What is the change in internal energy (in J) of a system that absorbs 0.603 kj of heat from its surroundings and has 0.903 kcal of work done on it? give your answer in scientific notation
Gaseous C2H4 reacts with O2 according to the following equation: C2H4(g) +3O2(g) --> 2CO2(g) + 2H2O(g). What volume of oxygen at STP is needed to react with 1.50 mol of C2H4
Liquid Chlorobenzene flows through a pipe at a rate of 3M^3/min. What is the mass flow rate of the stream in kg/h. What is the molar flow rate in mol/s
Write a proposed procedure in chart format to determine the identity of the following aqueous solutions: HCl, Na2C2O4, Al(NO3)3, AgNO3, Mn(NO3)2, ZnCl2, H2O2, NH4Cl, Ba(NO3)2, Na2CO3, NA2S2O3.
When 50 grams of iron absorbs 1.0 kJ of heat its temperature increases by forty degrees celsius. What is the molar heat capacity of iron?
An expanding gas does 175.0 J of work on its surroundings at a constant pressure of 1.0 atm. If the gas initially occupied 68.0 mL, what is the final volume of the gas
The sample is diluted with 73.505 g of water. A 12.973 g aliquot of this solution is then titrated with 0.1038 M HCl. It required 29.32 mL of the HCl solution to reach the methyl red endpoint. Calculate the weight percent NH3 in the aqueous waste.
Calculate the energy requird to transform this steam into an ice cube at -20 degree C. Also, graph this phase change, with energy as a function of temperature
a 10.1 g sample of cacl2 is dissolved in 119 g of water with both substances at 25.0degc. calculate the final
The solubility of AgCl(s) in water at 25 degrees celsius is 1.33x10^-5 mol/L and its change in enthalpy of solution is 65.7 kJ/mol
The mass of substance B is twice the mass of substance A, but the specific heat capacity of substance A is four times the specific heat capacity of substance B.
when 3.02g NH4Cl solid was dissolved in 20.05 ml water the temperature of the water dropped from 19.8 degrees celcius to 9.1 degrees celcius
Calculate the equivalent weight of the unknown weak acid (g/eq). Calculate the molecular weight of the acid described in Question 1 (g/mol).
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