If the reaction: h2(g) + i2(g) 2hi(g) has a kc = 54.8 at 450°c, then what is the free energy of the reaction? (the value of the gas constant, r, is 0.008314 kj/k •mol). -15.0 kj/mol -24.1 kj/mol -10.5 kj/mol -6.5 kj/mol

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Given the following information: mass of proton = 1.00728 amu mass of neutron = 1.00866 amu mass of electron = 5.486 × 10^-4 amu speed of light = 2.9979 × 10^8 m/s calculate the nuclear binding energy (absolute value) of 3li^6. which has an atomic mass of 6.015126 amu. j/mol.

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy