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: The following analytical procedures were used for the determination of chlorate (ClO3). 10.00 mL of…

A: The volume of chlorate solution A= 10.00 mL = 0.010 L The volume of 0.100 M AgNO3 added =  70.00 mL…

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…

A: To write Complete Ionic equation  1.  write the Balance equation  2.  break the aqueous species into…

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

A: Given information: Mass of sample = 3.725 g Mass of Fe2O3 = 0.251 g Molar mass of FeSO4.7H2O =…

Q: Iron(II) can be oxidized to iron(III) by dichromate ion, which is reduced to chromium(III) in acid…

A: From given  Initially with the data , the reaction is given and from the reaction number of moles of…

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

A: Write the balanced chemical equation Write state for each substance Split strong electrolytes into…

Q: In the laboratory you are given the task of separating Pb²* and Fe2* ions in aqueous solution.

A:

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

A: Volume of HCl = 0.10 L Molarity of HCl = 0.750 M Initial moles of HCl = molarity×volume =0.750 M…

Q: Give the name or condensed structural formula, as appropriate: (CH3)2CHCH2CH2C(CH3)3

A: The first and the foremost step while naming the IUPAC name of an organic compound is the…

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

A: Since, Balanced reaction means that both side number of atom present in equal number. Thus,  For…

Q: In the laboratory you are given the task of separating Ca and Fe" ions in aqueous solution. For each…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

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…

Q: Aluminum in an ore sample is determined by dissolving it and then precipitating with base as Al(OH)3…

A: Given, 0.2385 g of precipitate

Q: 4. Balance each of the following reactions, and identify the type of reaction: Unbalanced Equation…

A: Given unbalanced reactions are balanced and mentioned the type of the reaction as below-

Q: A 0.3146 g sample of a mixture of NaCl(s) and KBr(s) was dissolved in water. The resulting solution…

A: The reaction involves the determination of the unknown ions in a solution as their insoluble salt…

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…

A: In this question we will apply the concept of redox reaction and we will write the balanced chemical…

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

A: Given: The thickness of Al foil=0.550 mm 1 cm =10 mm 0.550 mm ×1 cm10 mm =0.055 cm Volume =1.00 cm2…

Q: A solution of 300.0 mL of 0.150 M Nickel (II) sulfate is mixed with a solution of 100.0 mL of 0.200…

A: Balanced chemical equation is necessary so as to abide by the law of conservation of mass and to…

Q: A solution is prepared by dissolving 0.5482 grams of iron(III) nitrate in enough water to make 100.0…

A: Molarity (M) :-  The number of moles of solute dissolved in one litre of solution is known as…

Q: In the laboratory you are given the task of separating Pb2+ and Ag+ ions in aqueous solution.   For…

A:

Q: Dissolve about 2 g of CuSO4.5H;O in about 20 mL of tap water in 100 mL beaker. Then add 6 g zinc…

A: We only answer up to 3 sub-parts. Please resubmit the question with other sub-parts (up to 3) you…

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…

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

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

A: Given that,  An iron sulfide compound with molecular formula = Fe7S8 oxidation state of sulfur = -2…

Q: What mass of solid potassium oxalate (K2C2O4), when dissolved in an acidic solution, would be…

A:

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…

A:

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

A: In a double replacement reaction, the cations and anions of two different molecules switch places,…

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

A:

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

A: Answer:When solutions of two different substances are mixed and formation of a precipitate takes…

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)…

A:

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

A: Given: Concentration (molarity) of Pb(NO3)2 = 0.754 M  Volume of Pb(NO3)2 = 66.0 mL molar mass of…

Q: Suppose a student needs to standardize a sodium thiosulfate, Na, S,0,, solution for a titration…

A:

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 .

Q: A stock solution containing Mn2+ ions was prepaned by dissolving 1.584 g pure manganese metal in…

A: The concentration of stock is calculated as,

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

A:

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".