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18 Nov 2019
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What mass of potassium phosphide can be obtained from the reaction of 7.32 g K with excess P_4? K + P_4 rightarrow K_3 P (unbalanced) A) 13.9 g B) 41.6 g C) 83.3 g D) 9.25 g After the reaction of 0.344 moles N_2 with 0.643 moles of O_2 to form N_2O_5, what amount of excess reactant is present? N_2 + O_2 rightarrow N_2O_5 (unbalanced) A) 0.087 mol B) 0.070 mol C) 0.023 mol D) 0.127 mol For the chemical reaction below, a molecular view depicting the reaction mixture before the reaction occurs is given. How much product can be formed and what is the limiting reactant? X_2 + 4Y rightarrow 2XY_2 A) 6 XY_2 are formed, X_2 is limiting B) 3 XY_2 are formed, X_2 is limiting C) 6 XY_2 are formed, Y is limiting D) 3 XY_2 are formed, Y is limiting When 41.8 g of sulfur reacts with 53.7 g of oxygen, what is the maximum number of moles of sulfur dioxide that can be formed? S_4 + O_2 rightarrow SO_2 (unbalanced) A) 3.36 mol B) 0.65 mol C) 1.68 mol D) 1.30 mol
Explain these answers
What mass of potassium phosphide can be obtained from the reaction of 7.32 g K with excess P_4? K + P_4 rightarrow K_3 P (unbalanced) A) 13.9 g B) 41.6 g C) 83.3 g D) 9.25 g After the reaction of 0.344 moles N_2 with 0.643 moles of O_2 to form N_2O_5, what amount of excess reactant is present? N_2 + O_2 rightarrow N_2O_5 (unbalanced) A) 0.087 mol B) 0.070 mol C) 0.023 mol D) 0.127 mol For the chemical reaction below, a molecular view depicting the reaction mixture before the reaction occurs is given. How much product can be formed and what is the limiting reactant? X_2 + 4Y rightarrow 2XY_2 A) 6 XY_2 are formed, X_2 is limiting B) 3 XY_2 are formed, X_2 is limiting C) 6 XY_2 are formed, Y is limiting D) 3 XY_2 are formed, Y is limiting When 41.8 g of sulfur reacts with 53.7 g of oxygen, what is the maximum number of moles of sulfur dioxide that can be formed? S_4 + O_2 rightarrow SO_2 (unbalanced) A) 3.36 mol B) 0.65 mol C) 1.68 mol D) 1.30 mol
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Elin HesselLv2
20 May 2019
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