For the following reaction, 46.0 grams of iron are allowed to react with 18.4 grams of oxygen gas .

iron(s) + oxygen(g) ---> iron(III) oxide(s)

a. What is the maximum mass of iron(III) oxide that can be formed?

b. What is the formula of the limiting reagent?

c. What mass of the excess reagent remains after the reaction is complete?

1500 pound per hour of a waste mixture of 40% benzene, 50% toluene and 10% of water is burned with 25% excessive air. Determine the total heat released and the percent by volume of each component in the flue gas.
thank you.

Polychlorinated biphenyls (PCBs), which were formerly used in the manufacture of electrical transformers, are environmental and health hazards. They break down very slowly in the environment. The decomposition of PCBs can be represented by the equation:

2C12H4Cl6 + 23O2 + 2H2O --> 24CO2 + 12HCL

Answer parts (a) through (e) below: a) How many moles of water are needed to react 10.0 mol O2?

b) How many grams of HCl are produced when 15.2 mol H2O react?

c) How many moles of CO2 are produced when 76.5 g HCl are produced?

d) How many grams of C12H4Cl6 are reacted when 100.25 g CO2 are produced?

e) How many grams of HCl are produced when 2.5 kg C12H4Cl6 react?

A) A student measures the molar solubility of copper(II) hydroxide in a water solution to be 3.49×10^-7 M.  
Based on her data, the solubility product constant for this compound is  .

B) A student measures the molar solubility of nickel(II) cyanide in a water solution to be 1.91×10^-8 M.  
Based on her data, the solubility product constant for this compound is  .

C) A student measures the molar solubility of silver carbonate in a water solution to be 1.24×10^-4 M.  
Based on her data, the solubility product constant for this compound is  .

Suppose there are two known compounds containing the generic elements X and Y. You have a 1.00 g sample of each compound. One sample contains 0.31 g of X and the other contains 0.40 g of X. Identify plausible sets of formulas for these two compounds. X2Y and X3Y X2Y5 and X3Y5 XY and X2Y X3Y and X4Y XY3 and XY4 XY and X3Y X4Y2 and X3Y

For each of the following reactions, 25.0 g of each reactant is present initially.

Determine the limiting reactant.

2Al(s)+3Br2(g)→2AlBr3(s)

Calculate the grams of product in parentheses that would be produced.
(AlBr3)

Determine the limiting reactant.
4NH3(g)+5O2(g)→4NO(g)+6H2O(g)

Calculate the grams of product in parentheses that would be produced.
(NO)

Determine the limiting reactant.
CS2(g)+3O2(g)→CO2(g)+2SO2(g)

Calculate the grams of product in parentheses that would be produced.
(CO2)

1. If 2.000 g of hydrated magnesium chloride are heated to remove the water of hydration, the anhydrous salt that remains has a mass of 0.9366 g. Determine the following:(A)The mass of water that was lost upon heating. (B)The moles of water that were lost upon heating. (C)The moles of magnesium chloride that remained after heating. (D)The mole ratio for the magnesium chloride and the water. (E)The formulas for this hydrate is ___________________________________________(F)The name for this hydrate is ______________________________________________

P4O10 is classified as an acidic oxide because it

A. reacts with acids to produce a salt.

B. is insoluble in water.
C. reacts with water to produce OH– .
D. gives a solution of phosphoric acid, H3PO4, on dissolving in water.
E. can act as a Lewis base by donating electron pairs.

A 9.59 g sample of calcium sulfide was decomposed into its constituent elements, producing 5.33 g of calcium and 4.26 g of sulfur. Which of the statements are consistent with the law of constant composition (definite proportions)? The mass percentage of calcium plus the mass percentage of sulfur in every sample of calcium sulfide equals 100%. The ratio of calcium to sulfur will vary based on how the sample was prepared. The mass ratio of Ca to S in every sample of calcium sulfide is 1.25. Every sample of calcium sulfide will have 5.33 g of calcium. Every sample of calcium sulfide will have 55.6% mass of calcium

How can you combine standard addition and internal standard techniques in an HPLC experiment?

When the following reaction is balanced in basic solution using the lowest possible whole number coefficients, the coefficient of OH- will be??

CN-(aq) + MnO4-(aq) --> CNO-(aq) + MnO2(s)

Resonance results in a weaker base and a weaker nucleophile?

suppose you had a mixture of silver iodide, potassium nitrate, ethyl alcohol, and water. if you wanted to recover each of the compenents in pure form, which methods: decantation after sedimentation, decantation after centrifugation, or filtration would you use? Explain how you would carry out this separation and recovery, indicating exactly what components you have at each step of procedure.

Which one of these salts will form a basic solution on dissolving in water?

A. NaCl

B. KCN

C. NaNO₃

D. NH₄NO₃

E. FeCl₃