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@X@user.full_name@X@ @GMU: A gas mixture contains 0.1906 mol of NO2 and 0.2521 mol of He. What is the partial pressure of NO2, if the total pressure is 789.44 mm Hg?

@X@user.full_name@X@ @GMU: A gas mixture contains 0.1789 mol of C2H6 and 0.2497 mol of NO. What is the partial pressure of C2H6, if the total pressure is 771.39 mm Hg?

@X@user.full_name@X@ @GMU: How many grams of NaOH must be dissolved to produce exactly 100 mL of a 1.121 M solution?

@X@user.full_name@X@ @GMU: How many grams of KCl must be dissolved to produce exactly 100 mL of a 1.170 M solution?

@X@user.full_name@X@ @GMU: Which of the elements given will have a big jump in the 8th ionization energy?

@X@user.full_name@X@ @GMU: The average speed of HCl molecules (atoms) was 719.9 m/s. What was the temperature of the gas?

@X@user.full_name@X@ @GMU: What is the empirical formula of a compound if its percent composition is 64.81 % C and 13.60 % H? The compound contains only C, H and O.

@X@user.full_name@X@ @GMU: What is the molar heat capacity of Na if it took 14.205 J to increase the temperature of 15.31 g of it by 7.543°C?

@X@user.full_name@X@ @GMU: When 11.568 g of Cs reacted with an excess of oxygen, a total of 7.127 g of Cs2O formed? What was the percent yield?4Cs(s) + O2(g) → 2Cs2O(s)

@X@user.full_name@X@ @GMU: When 12.981 g of Ga reacted with an excess of oxygen, a total of 8.081 g of Ga2O3 formed? What was the percent yield?4Ga(s) + 3O2(g) → 2Ga2O3(s)