For the reaction P4O10(s) + 6H2O(l) ® 4H3PO4(aq), what mass of P4O10 must be consumed if 7.87 × 1023 molecules of H2O are also consumed?

For each of the following reactions, suggest two soluble ionic compounds that, when mixed together in water, result in the net ionic equation given: (a) 2 Ag+ (aq) + CO3²¯ (aq) → Ag₂CO3(s) (b) Mg²+ (aq) + 2 OH¯(aq) → Mg(OH)₂(s), the suspension present in milk of magnesia 3+ (c) 3 Ca³+ (aq) + 2 PO2 (aq) → Ca3(PO4)2(s), gypsum, a component of concrete

As shown in the following Figure, an aqueous solution of Nal is poured into an aqueous solution of Pb(NO3)2 which results in the formation of a yellow precipitate. Assuming stoichiometric amounts of Nal and Pb(NO3)2 are reacted, give the chemical formula of the yellow precipitate and the chemical formula of all molecules and/or ions that are present in the solution (You may use the solubility matrix to answer this question). (b)

A 3.27 g sample of iron ore is transformed to a solution of iron(II) sulfate, FeSO4. This solution is titrated with 0.110 M K2CT20, (potassium dichromate). If it requires 58.3 ml of potassium dichromate solution to titrate the iron(II) sulfate solution, what is the percentage of iron in the ore? The reaction is 6FESO, (aq) + K, Cr2O; (aq) + 7H;SO4 (aq) + 3Fe; (SO,)a (aq) + Cr2 (SO4)a (ag) + 7H2O(1) + K2SO, (ag) Percentage =

Determine the maximum (theoretical) and actual yield of CaCO3, in grams, that can be produced from the precipitation reaction given 105.99 mol of Na2CO3.  Na2CO3 (aq) + CaCl2 ⋅2H2O → CaCO3 (s) + 2NaCl(aq) + 2H2O(aq)

Chloramine is a toxic gas that can form in swimming pools by the reaction of hypochlorous acid, used to sanitize pool water, with ammonia, a component of sweat and urine. Chloramine gas, NH₂Cl(g), is the cause of the identifiable 'pool smell'. The balanced chemical equation for the reaction of hypochlorous acid and ammonia is: HOCl(aq) + NH₃(aq) → NH₂Cl(g) + H₂O(l) A swimming pool holding 9.50 × 10⁴ gallons of water. 1.00 gallons HOCl sanitizer is enough to sanitize 1.00 × 10⁴ gallons of pool water. The sanitizer has a concentration of 12.00 mg/L of Cl atoms. Determine the moles of chloramine are produced if ammonia is in excess. (1 gal = 3.785 L)

The balanced chemical equation for the reaction between calcium hydroxide and hydrochloric acid is: Ca(OH)2 ( aq) + 2 HC1 ( aq )→ CaCl2 ( aq ) + 2 H,0 (1) We can interpret this to mean: 1 mole of calcium hydroxide and |mole(s) of hydrochloric acid React to produce: | mole(s) of calcium chloride and |mole(s) of water

Commercial drain cleaners contain sodium hydroxide and aluminum. When water is added to this mixture, the heat that is generated will melt grease and the gas that is created will stir up the particles that are clogging the drain. If the process proceeds according to the following reaction: 2 Al (s) + 2 NaOH (aq) + 6 H2O (l) → 2 NaAl(OH)­4 (aq) + 3 H2 (g)   If you use 5.6 g of Al (s) and excess sodium hydroxide, how many liters of H2 (g) at 742 mm Hg and 22.0 ˚C are produced?

What mass of Mg, in g, is required to react with 63.4 mL of 0.269 M AgNO3 solution? Mg(s) + 2AgNO3(aq) → 2Ag(s) + Mg(NO3)2(aq) g Mg

Solid copper can be produced by passing gaseous ammonia over solid copper (II) oxide at high temperatures, according to the following reaction.   NH3 (g) + CuO (s) → N2 (g) + Cu (s) + H2O (g)  Balance the reaction.