A 1.00 g sample of a magnesium-aluminum alloy yields 0.107 g H2 when treated with an excess of HCl(aq). What is the percentage by mass of Al in the alloy? [Hint: This is the inverse of Example 4-16. To solve this problem, let m and 1.00 - m be the masses of Al and Mg, respectively, and then use these masses in the setup above to develop an equation that relates m to the total mass of H2 obtained. Then solve for m.]

Q: 3. Given the following reactants, predict the expected products and balance the chemical equation.…

A:

Q: Please write the complete ionic equation when mixing the following two aqueous salts: C a C l 2 ( a…

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Q: A powder contains FeSO, 7H,O (molar mass = 278.01 g/mol), among other components. A 3.725 g sample…

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Q: P b ( N O 3 ) 2 ( a q ) + K I ( a q ) ⟶ ???

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Q: A sample of impure magnesium was analyzed by allowing it to react with excess HCl solution. After…

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Q: Write the balanced COMPLETE ionic equation for the reaction when CaCl₂ and Na₃PO₄ are mixed in…

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Q: If a nail made of elemental iron [Fe(s)] is placed in an aqueous solution of a soluble palladium(II)…

A:

Q: In a neutralization reaction, 50.00 mL of 0.8500 M phosphoric acid reacts with 2.500 g of magnesium…

A: The answers to the first three questions can be given as - Given Data -

Q: A powder contains FeSO 7 H₂O (molar mass = 278.01 g/mol), among other components. A 3.630 g sample…

A: The objective of this question is to determine the mass of FeSO4.7H2O in a 3.630 g sample of a…

Q: 243 ml solution of aqueous iodine is prepared by dissolving iodine crystals in water. a fifty ml…

A: The balanced reaction is as follows: H3AsO3(aq) + I2 (aq)+H2O (l)→2I-(aq)+H3AsO4(aq)+2H+(aq) Thus 1…

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Q: 0.8102 g sample of impure Al2(CO3)3 (MM= 234 g/mol) decomposed with HCl; the liberated CO2 was…

A: Mass of impure sample = 0.8102 g  Mass of CaCO3 = 0.0515 g  Molar mass of CaCO3 = 100 g/mol

Q: A sample of manganese weighing 1.743 g is dissolved in 4.00 M HCl. What (minimum) volume of HCl is…

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Q: A piece of aluminum foil 1.00cm^2 and 0.550-mm thick is allowed to react with bromine to form…

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Q: A student wishes to determine the mass percentage of barium in a 2.016g sample. The student…

A: Given : Mass of sample = 2.016g Molarity of H2SO4 = 0.20M Volume of H2SO4 = 20ml

Q: Some chemical reactants are listed in the table below. Complete the table by filling in the…

A: Oxidation state - The total number of electrons that an atom either gains or loses in order to form…

Q: Write the net ionic equation for the reaction of iron metal with aqueous copper(II) nitrate. Include…

A: A chemical equation in which the electrolytes of aqueous solution are represented as dissociated…

Q: Some chemical reactants are listed in the table below. Complete the table by filling in the…

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Q: Iron forms a sulfide with the approximate formula Fe,Se. Assume that the oxidation state of sulfur…

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Q: When 45.0 mL of a 1.0 M lead (ii) nitrate solution react with 45.0 mL of a 1.0 M sodium iodide…

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Q: a solution of (NH4)2SO4 (aq) is combined with a solution of Ba(NO3)2 (aq). What is the driving force…

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Q: redox reaction? Oyes ou O reducing (1)0'H + (bn) os (bp) HO + (bD)'OSH agent: oxidizing agent: redox…

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Q: Write the balanced COMPLETE ionic equation for the reaction when CS3​PO4​ and AgNO3 ​are mixed in…

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Q: Exactly 25.0 mL of a 0.3757 M solution of Na;PO, were mixed with 100.00 mL of 0.5151 M H9NO3. (a)…

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Q: How many grams of PbBr2 will precipitate when excess AlBr3 solution is added to 66.0 mL of 0.754 M…

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Q: Write the balanced NET ionic equation for the reaction when Pb(NO₃)₂ and KI are mixed in aqueous…

A: 1.Pb(NO3)2 is called lead  lead nitrate   2.KI is called pottasium iodide .

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Q: 3. How many grams of copper are required to replace 4.00 g of silver nitrate, which is dissolved in…

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Q: Write the balanced COMPLETE ionic equation for the reaction when FeC₂H₃O₂ and Ca(OH)₂ are mixed in…

A: Aqueous solution of Fe(C₂H₃O₂)₂ and Aqueous solution of Ca(OH)₂ are mixed together to give Fe(OH)₂…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".