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A total of 2.00 mole of a compound is allowed to react in a foam coffee cup that contains 149 grams of water. The reaction caused the temperature of the water to rise from 21.0 to 24.7 degrees C . What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself.
What is the concentration of all ions present in this strong electrolyte solution: 0.100mol of Ca(NO3)2 in 100.0ml of solution?
Assuming ideal behavior, calculate the mole fraction of toluene in the solution.
For the acid-base titration combination of NaOH with 1.5 mol HCl, find the number of moles of NaOH that would be the chemically equivalent amount of HCl. Answer in units of mol.
Consider: C7H16 (l) + 11 O2 (g) → 7 CO2 (g) + 8 H2O (l) ΔH°reaction=- 4130 kJ. How much energy is released when 4.000 moles of C7H16, is combusted?
We are asked to construct an energy level diagram (molecular orbital) for the molecule SO. We are then asked to comment on the ionic species of SO - bond order, bond distance etc. So far so good.
Determine the molar mass of aspartame and How many moles of molecules are in 10.0g of aspartame?
Determine the mass of H 2 O is formed if oxygen of 10.0L react completely in the given equation?
Consider a gas at 1.00 atm in a 5.00 L container at 20 degrees celsius. What pressure does the gas exert when transferred to a volume of 2.77 L at 43 degrees celsius?
The mass of the sample before heating was 3.327g and after heating the mass was 2.432g. What is the percent composition of sodium carbonate in the original mixture?
A sample of sodium reacts completely with 0.142kg of chlorine, forming 234g of sodium chloride. What mass of sodium reacted?
2ZnS + 3O2 = 2ZnO + 2SO2 how many moles of Zno are produces when 32 gms of oxygen is allowed to react with an excess of ZnS?
A turbine operates adiabatically with super-heated steam entering at T1, and P1, with a mass flow-rate, m(dot). The exhaust pressure is P2 and the turbine efficiency is gamma
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