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Suppose that 0.570 mol of methane is reacted with 0.720 mol of fluorine forming CF4(g) and HF(g) as sole products. Assuming that the reaction occurs at constant pressure, how much heat is released?
Determine the concentration of CO32- ions in a 0.18 M H2CO3 solution. Carbonic acid is a diprotic acid whose Ka1 = 4.3 x 10-7 and Ka2 = 5.6 x 10-11."
What is the concentration of [Cl?] in a solution of 10 mL of 12 M HCl when 6 mL of water is added
what is the free zn2 concentration if 0.020 m zn2 solution is mixed with an equal volume of 2.0 m nh3? kf for znnh342
The major reason that antiparallel beta-stranded protein structures are more stable than parallel beta-stranded structures is that
What mass of platinum will be formed when 12.5 A are passed through molten PtCl2 for 30.0 minutes
Given the following at 25°C and 1.00 atm: 1/2N2(g) + O2(g) ® NO2(g)DH0 = 33.2 kJ N2(g) + 2O2(g) ® N2O4(g)DH0 = 11.1 kJ Calculate the DH0 for the reaction below at 25°C. 2NO2(g) ® N2O4(g)
How many grams of aluminum chromate are produced from 66.4 grams of aluminum hydroxide?
How many grams of Mg(NO3)2 (Mm=147 g/mol) must be added to 405 g of water to make a solution with a colligative molality of 0.125 m?
the air in an inflated balloon defined as the system is warmed over a toaster and absorbs 115 j of heat. as it expands
To cool a volume of water from 176° K to 100° K, 7.9 x 104 J of heat energy must be removed. What is the volume of water that was cooled?
Match the quantum numbers with the corresponding shell and subshell or invalid if the quantum numbers are not a valid set.
List the chemical names and number of atoms for each chemical for each of the following equations.
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