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@X@user.full_name@X@ @GMU: A 55.63 mL sample of 0.2425 M HCN was neutralized by exactly 37.63 mL of Mg(OH)2. What was the molarity of Mg(OH)2?2HCN(aq) + Mg(OH)2(aq) → Mg(CN)2(aq) + 2H2O(l)

@X@user.full_name@X@ @GMU: A compound contains only beryllium and astatine. A sample weighing 129 g of this compound contained 2.71 g of beryllium. How many grams of astatine would there be in another sample of this compound containing 8.59 g of beryllium?

@X@user.full_name@X@ @GMU: How many milliseconds are there in 34.70 deciseconds?

@X@user.full_name@X@ @GMU: Determine which compound should have a(n) linear molecular geometry.

@X@user.full_name@X@ @GMU: The density of a particular gas is 3.9385 g/L at 800.52 mm Hg and 26.72 °C. Which gas is it?

@X@user.full_name@X@ @GMU: How many grams of H2S must one react with a stoichiometric amount of O2 to produce -115.2 kJ?2H2S(g) + 3O2(g) → 2SO2(g) + 2H2O(g) ΔH = -1037 kJ

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

@X@user.full_name@X@ @GMU: What is the molarity of KOH if it took 22.36 mL of KOH to neutralize 0.2169 g of oxalic acid (FM = 126.07 g /mol)?H2C2O4*2H2O(aq) + 2KOH(aq) → K2C2O4(aq) + 4H2O(l)

@X@user.full_name@X@ @GMU: A compound contains only rubidium and astatine. A sample weighing 9.34 g of this compound contained 2.70 g of rubidium. How many grams of astatine would there be in another sample of this compound containing 7.48 g of rubidium?

@X@user.full_name@X@ @GMU: What is the molarity of NaClO4 if 7.531 g was dissolved in exactly 100 mL?