Multiple ChoiceIn one formula unit of silver sulfide (Ag2S), how many silver atoms are present?173views
Multiple ChoiceWhen 64.0 g of C_2H_2 (acetylene) are completely combusted in oxygen, how many moles of H_2O are produced?96views
Multiple ChoiceIn the combustion of carbon, according to the reaction C + O_2 → CO_2, how many moles of oxygen gas (O_2) are required to produce 7.00 moles of carbon dioxide (CO_2)?111views
Multiple ChoiceIf 60 grams of ethane (C_2H_6, molar mass 30 grams/mol) react completely with excess oxygen according to the equation 2 C_2H_6 + 7 O_2 → 4 CO_2 + 6 H_2O, how many moles of CO_2 are produced?98views
Multiple ChoiceGiven the reaction AgNO_3 + NaCl → AgCl + NaNO_3, how many moles of AgCl are produced from 15.0 mol of AgNO_3, assuming excess NaCl?107views
Multiple ChoiceHexane (C6H14) combusts according to the equation: 2 C6H14 + 19 O2 → 12 CO2 + 14 H2O. How many moles of hexane (C6H14) must burn to produce 18.4 mol of carbon dioxide (CO2)?217views
Multiple ChoiceIn the reaction of potassium permanganate (KMnO4) with oxalic acid (C2H2O4) to produce carbon dioxide (CO2), how many moles of KMnO4 are consumed to form 0.886 moles of CO2? (Assume the balanced equation: 2 KMnO4 + 5 C2H2O4 + 3 H2SO4 → 2 MnSO4 + K2SO4 + 10 CO2 + 8 H2O)290views
Multiple ChoiceIn the reaction 2 H2S + O2 → 2 S + 2 H2O, which species has the greatest rate of appearance?140views