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At constant external pressure (1.2atm), the temperature of 3.25 mol of ideal gas increased from 250K to 305K. Calculate the internal energy change ΔE.
The water level in a graduated cylinder was at 211 rises initially it raised to 270 after adding a piece of lead is submerged. Determine the mass in grams of the lead?
Determine how much heat (in kJ) is needed to warm 12.0g of ice, that is initially at -10.0 ° C, to steam at 114.0 ° C? The heat capacity of ice is 2.09 J/g⋅ ° C and that of steam is 2.01 J/g⋅ ° C.
What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M methylamine, CH3NH2, with 25.00 mL of 0.10 M methylammonium chloride, CH3NH3Cl.
What is the chemical make-up of natural cleaners? How do these products compare to traditional cleaners? Are the active ingredients the same or different?
In a flame test in the lab, the compound Barium Chloride and Barium nitrate have ions, what are the cations and anions for both.
What is the pE value in an acid mine water sample having [Fe3+] = 6.79E-3 M and [Fe2+] = 4.14E-4 M?
Determine how many moles of CO 2 would have to be combined at constant temperature and volume to increase the amount of CO to 0.300 moles?
What is the percentage yield if 465 grams of hydrogen reacted with excess nitrogen and 455 grams of ammonia is formed N2 (g) + 3 H2 (g) 2NH3(g)
At the temperature of twenty five degree celsius when 1.00 g of sulfur is burned at constant pressure in an atmosphere of oxygen to give SO 2 , and 9.28 kJ of heat is liberated. Determine the ΔHfo of SO 2 ?
Determine the molar mass of the substance if 120.0 grams of a pure sample contained 24.0 mol of the substance. Express your answer in g/mol.?
Iron has a density of 7.9 g/ cm3. What is the mass of a cube of iron with the length of one side equal to 55.0 mm.
One metric ton (1000 kg) of coal is required to produce 7.3 MW-hr of electrical energy. In 1993, the Thomas Hill power plant (a small, coal-fired plant supplying rural electric cooperatives) produced 7100000.0 MW-hr.
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