Which of the following compounds is soluble in water? Fes Mn_2S_3 NiS Na_2S H_g2l_2 The reaction of elemental chlorine with potassium iodide yields elemental iodine and potassium chloride. Write a balanced chemical equation for this reaction. Cl_2(g) + 2 K_2l(s) rightarrow I_2(s) + 2 K_2Cl(s) Cl(g) + Kl(s) rightarrow l(s) + KCl(s) Cl_2(g) + Kl_2(s) rightarrow I_2(s) + KCl_2(s) Cl_2(g) + 2 Kl(s) rightarrow l_2(s) + 2 KCl(s) Cl_2(g) + Kl(s) rightarrow I(s) + KCl_2(s) Pure copper may be produced by the reaction of copper(l) sulfide with oxygen gas as follows. Cu_2S(s) + O_2(g) rightarrow 2Cu(s) + SO_2(g) of copper metal? What mass of copper(I) sulfide is required in order to prepare 0.580 kg of copper metal? 145 kg 0.726 kg 0.29 kg 0.58 kg 0.436 kg If an aqueous solution of ___ is added to a mixture of F^- and SO_4^2-, the fluoride ion will precipitate, but the sulfate gNH_3 with 17.0g O_2? NH_3(g) + 5 O_2(g) rightarrow 4 NO(g) + 6 H_2O(g) 4.54 g 14.1, 12.8 g 25.0 g 15.9 g How many moles of sodium bromide can be produced from the reaction of 1.03 moles of sodium with 0.65 moles of bromine gas? 2 Na(s) + Br_2(g) rightarrow NaBr(s) 0.65 mol 2.06 mol 0.515mol 1.03 mol 1.30 mol Which anion will from a precipitate with Ca^2+? C_2H_3O_2^- Cl^-OH^- Br^- none Which of the following statements is/are CORRECT? A solution is a homogeneous mixture of two or more substances. A solute is a mixture of a solvent and a solution in which water is a solvent. 1 only 2 only 3 only 1 and 2 1 and 3
