@X@user.full_name@X@ @GMU: Balance the reaction below; determine the sum of the coefficients; this is in a basic solution! Include co-efficients for any unshown species(such as water and hydroxide)._CrO42- + _H2O2 → _Cr(OH)3 + _O2

@X@user.full_name@X@ @GMU: What is the mass (grams) of one molecule of CH4?

@X@user.full_name@X@ @GMU: What is the free energy change at 25°C for the reaction below, if ΔGfo(CH4(g)) = -50.790 kJ/mol, ΔGfo(C3H6(g)) is 104.514 kJ/mol.3CH4(g) → C3H6(g) + 3H2(g)

@X@user.full_name@X@ @GMU: Which of the answers below is an example of a(n) weak electrolyte reaction?

@X@user.full_name@X@ @GMU: ACS-Determine the cell potential for the reaction below if [Cu2+] = 0.2205M and [Cr3+] = 0.0157M 3Cu2+(aq) + 2Cr(s) → 3Cu(s) + 2Cr3+(aq) E°= 1.080V

@X@user.full_name@X@ @GMU: What is the standard cell voltage at 25.0oC for the reaction below?Sn4+(aq) + Ni(s) → Sn2+(aq) + Ni2+(aq) K = 7.37e13

@X@user.full_name@X@ @GMU: Which of the following is a mixture?

@X@user.full_name@X@ @GMU: A flexible container was filled with H2 gas at a pressure of 1.121 atm and volume of 17.939 L. What volume would this same gas occupy if the pressure increased to 2.561 atm? Assume temperature is constant.

@X@user.full_name@X@ @GMU: The density of a particular gas is 1.4277 g/L at 772.22 mm Hg and 22.44 °C. What is the molecular mass of the gas?

@X@user.full_name@X@ @GMU: ACS-What is ΔG° for the reaction below, if ΔH° = 131.40 kJ, ΔS° = 135.000 J/KC(s) + H2O(g) → CO(g) + H2(g)