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The molar heat of fusion of water is 6.02 KJ/mol. calculate the energy required to melt 3.96 mol of ice. The molar heat of fusion of water is 6.02 KJ/mol. Calculate the energy required to melt 16.6g of water.
A sample of helium gas is at a temperature of 100 K. If both the volume and pressure each double what is the final kelvin
The two ions are mixed in a solution and you need to pick a chemical to add that would allow you to selectively remove one of them. Briefly describe the process you would use to separate the two ions.
A gas mixture contains 1.25 g N2 and 0.85 g O2 in a 1.55-L container at 18 °C. Calculate the mole fraction and partial pressure of each component in the gas mixture.
Calculate the enthalpy change in kJ when 21.6g of H2S is burned. 2H2S(g) + 3O2(g) --> 2SO2(g) + 2H20(g) Change in H=-1036kJ/mol
14 g of Si reacts with 16 g of O to produce SiO2, the only product, with no reactant left over. How much SiO2 would be produced from 34 g of Si and excess O?
Calculate the value of the activation energy for decomposation of NOCL?
Compute ΔU for the transformation; a = 0.136 m6Pa mol-2 ; b = 0.0391 L/mol.
draw a lewis structure of the molecule and indicate the number of bonds and orbitals used in bonding. Show electron configurations of the central bonding atom in both the unhybridized and hybridized states.
A proton in a linear accelerator has a de Broglie wavelength of 117pm. what is the speed of the proton?
A balloon filled with 5.00 L of He is under 3.00 atm of pressure at 315 K. What will happen to the volume of the gas if the temperature drops to 255 K and the pressure changes to 1.50 atm.
You have 250.0 mL of a 0.56M solution of sodium acetate. How many mL of 0.50M acetic acid should be added to make a buffer of pH 4.40.
How much PV work is done, if 90 grams of ethylene and 120 grams of HCl are allowed to react at atmospheric pressure and the volume change is -71.2 liters?
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