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According to the following reaction, what amount of Al2S3 remains when 20.00 g of Al2S3 and 2.00 g of H2O are reacted?  A few of the molar masses are as follows:  Al2S3 = 150.17 g/mol, H2O = 18.02 g/mol.               Al2S3(s) + 6 H2O(l)  →  2 Al(OH)3(s) + 3 H2S(g)

Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of K2CO3 and HBr are mixed.

According to the following reaction, what mass of PbCl2 can form from 235 mL of 0.210 M KCl solution?  Assume that there is excess Pb(NO3)2. KCl = 74.548 g/mol; Pb(NO3)2  = 331.208 g/mol; PbCl2 = 278.1 g/mol; KNO3 = 101.102 g/mol             2 KCl(aq) + Pb(NO3)2(aq)  →  PbCl2(s) + 2 KNO3(aq)

According to the following reaction, how many grams of sulfur are formed when 34.7 g of water are formed?               2 H2S(g) + SO2(g)  →  3 S(s) + 2 H2O(l)

What element is undergoing reduction (if any) in the following reaction? Zn(s) + 2 AgNO3(aq)  →  Zn(NO3)2(aq) + 2 Ag(s)

According to the following reaction, what mass of PbCl2 can form from 325 mL of 0.110 M KCl solution?  Assume that there is excess Pb(NO3)2. KCl = 74.548 g/mol; Pb(NO3)2  = 331.208 g/mol; PbCl2 = 278.1 g/mol; KNO3 = 101.102 g/mol             2 KCl(aq) + Pb(NO3)2(aq)  →  PbCl2(s) + 2 KNO3(aq)

Determine the percent yield of a reaction that produces 38.65 g of Fe when 60.00 g of Fe2O3 reacts with excess Al according to the following reaction.             Fe2O3(s) + 2 Al(s)  →  Al2O3(s) + 2 Fe(s)

A sample of potassium iodide is decomposed into its constituent elements.  If the sample produced 24.4 kg of potassium, how many kg of iodine were produced?

How many molecules of sucrose are contained in 14.3 mL of 0.120 M sucrose solution?

What element is undergoing oxidation (if any) in the following reaction? Zn(s) + 2 AgNO3(aq)  →  Zn(NO3)2(aq) + 2 Ag(s)