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### 15 Cards in this Set

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 At STP, one mole of any gas occupies a volume of: c.) 22.4 L What is the volume, in liters, of 3.75 M of O2 gas at STP? c.) 84.0 L Determine the number of moles in 625 L of H2 gas at STP. b.) 27.9 mol The density of a gaseous compound is 1.623 g/L at STP. Determine the gram formula mass of the compound. d.) 36.36 g How many atoms are contained in 12.5 grams of silver? a.) 6.97 x 10^22 atoms What is the percentage of aluminium in Al2(SO4)3? c.) 15.8% What is the mas of hydrogen in 50.0 g of propane, C3H8? b.) 9.1 g The reaction in question 12 is an example of a: c.) single-replacement reaction. When the equation Fe(s) + O2(g) -> Fe2O3(s) is balanced, what is the coefficient for Fe2O3? b.) 2 The reaction in question 14 is an expample of a : a.)combination reaction Which binary compound decomposes to form K + I2? b.) KI In order for the reaction Cu(s) + 2AgNO3(aq) ->Cu(NO3)2(aq)+ 2Ag(s) to occur, which of the following must be true? a.) Cu must be above Ag in the activity series. Water is often a product in: d.)double-replacement reactions Among the elements listed, which one coud replace all the rest as an ion from a compound in aqueous solution? b.) Ca The complete combustion of octane (C8H18) would: d.) all of these