1. An ore is analyzed for the manganese content by converting the manganese to MnsO4 and weighing it. If a 52-g sampl- vields MnsO, weighing 0.126 g. what would be (a) the percent Mn:Os in the sample: (b) The percent Mn?

Q: A 1.00 g sample of a magnesium-aluminum alloy yields 0.107 g H2 when treated with an excess of…

A: Given, Mass of Mg-Al alloy = 1.00 g Mass of H2 produced = 0.107 g   Moles of H2 produced can be…

Q: An impure sample of table salt that weighed 0.8571 g when dissolved in water and treated with excess…

A: Given: Mass of table salt sample = 0.8571 g. And mass of AgCl precipitates formed = 2.031 g. Molar…

Q: Phosphoric acid can be prepared from phosphorus triiodide according to the reaction:…

A: The balanced chemical equation that represents the reaction between phosphorus tri-iodide and water…

Q: 3.128 Heating 2.40 g of the oxide of metal X (molar mass ofX = 55.9 g/mol) in carbon monoxide (CO)…

A: The moles of X produced is, number of moles=given massmolar mass…

Q: A small iron pan was analyzed by dissolving a 11.1321 g sample in HCl. The resulting solution was…

A: Given, mass of Fe3O4 = 5.1231 g molar mass of Fe3O4 = 231.533 g/mol !! Calculate the moles of Fe3O4…

Q: For the species given below, give the oxidation states of the BOLD underlined element. a) Mg3N2…

A: NOTE: In part b, it will be Li2O and not LiO. Hence I'm taking correct formula. The compounds given…

Q: (a) A strontium hydroxide solution is prepared by dissolving12.50 g of Sr1OH22 in water to make…

A: Given:   The mass of strontium hydroxide is 12.50 g. The volume of strontium hydroxide is 50.00 mL.…

Q: Alt Hll. calculate the mass peizcentage Naz sOg in a 7g of SOg in lof salution Containing 413 of…

A: Given that: Mass of Na2 SO3 = 11.7 g Mass of water = 443 g  Total mass of solution = mass of water +…

Q: A soultion of sodium carbonate (Na2CO3(aq)) will react with a solution of calcium chloride…

A:

Q: Lead content can be analyzed gravimetrically by precipitating it as lead (ll) sulfate, PbSO4. When…

A: Gravimetric analysis:  This kind of analysis in chemical science has the application in the…

Q: Methanol (CH3OH) is a liquid at room temperature with a density of 7.91 x102 kg/m³. In a certain…

A: Percent yield = (Practical yield/theoretical yield)×100

Q: A sample weighing 3.056 g is a mixture of Fe, O, (molar mass = 159.69 g/mol) and Al, 0, (molar mass…

A:

Q: Q3: A: What mass of AgNO, is needed to convert 3.46g of Na:CO, to Ag CO., and calculate the mass of…

A:

Q: how would i determine the concentration of carbonate anion (CO32-) in g per L of a solution if there…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: Phosphoric acid can be prepared from phosphorus triiodide according to the reaction:…

A: Given reaction,      Pl3 (s)   +   H2O(l)      ->        H3PO4(aq)  +  HI(g)

Q: Methanol (CH3OH) is a liquid at room temperature with a density of 7.91 *10² kg/m³. In a certain…

A: Methanol has a variety of uses as a fuel, laboratory reagent, solvent, etc. In the given reaction,…

Q: Methanol (CH3OH) is a liquid at room temperature with a density of 7.91 x102 kg/m³. In a certain…

A: In a certain experiment, methanol is made to react with oxygen and carbon dioxide is obtained. For…

Q: 1. Diborane, B,Ho, can be produced by the following reaction: NaBH4ag) + HySO4lag) → H2 + Na,SO4(ay)…

A:

Q: D- Ba(CIo), (aq) + H1_0()

A: Given: Reaction To find: Complete the reaction Solution: Balanced equation is a equation in which…

Q: Consider the following made up compound: [M(en)»(CI):]Cl What is the oxidation state of M?

A: The combining capacity of an element in compound is known as oxidation number of that element,…

Q: Methanol (CH3OH) is a liquid at room temperature with a density of 7.91 ×10² kg/m³. In a certain…

A: (a) It is a combustion reaction. (b) Micropipette can be used to measure the volume of methanol.

Q: How many milligrams of MgI2 must be added to 282.0 mL of 0.0756 M KI to produce a solution with [I−]…

A: To calculate the mass of MgI2: First we have to calculate mol of KI,

Q: A 1.00 g mixture of H2O and D2O was electrolyzed producing H2(g), D2(g) and O2(g).  The H2(g) and…

A: The reactions involved are: Cl2+H2O⇒HOCl + HClCl2+D2O⇒DOCl + DCl

Q: The mass percent of Cl in a seawater sample is determined by titrating 25.00 mL of seawater with…

A: Number of moles of AgNO3 required , n = Molarity x volume in L…

Q: What mass of lithium phosphate is needed to prepare 500. mL of a solution having a lithium ion…

A:

Q: An ore is analyzed for manganese content gt converting the manganese to Mn3O4 and weighing it. If a…

A: Weight of sample = 1.52 g   Yield of sample  = 0.126 g

Q: A 0.8102-g sample of impure Al2(CO3)3 decomposed with HCl; the liberated CO2 was collected on…

A: The percentage of Aluminum in the sample can be calculated as follows

Q: In the preparation of Alum, we used (3 mole) reacted with (25 ml) of (1 M) KOH solution and the…

A: Given that -  Moles of aluminum, Al = 3 mole  Volume of KOH used K=39, Al-27, S-32, H=1= 25 mL…

Q: A medical lab is testing a new anticancer drug on cancer cells.The drug stock solution concentration…

A: Using molarity expression the number of drug molecules in given volume of drug solution is…

Q: A sample weighing 3.056 g is a mixture of Fe, O, (molar mass = 159.69 g/mol) and Al, O, (molar mass…

A:

Q: If 100.0 mL of 0.271 M Na, SO, are added to 100.0 mL of 0.905 M Pb(NO3),, how many grams of PbSO,…

A:

Q: 10 g of a concentrated HCl solution (density=1.17 g/mL, richness =397.5 g/L) were taken and diluted…

A: Yield of the reaction : The amount of product formed by the calculation of balanced equation and…

Q: The accompanying photo shows the reaction between asolution of Cd1NO322 and one of Na2S. (a) What is…

A: a) Cadmium nitrate[Cd(NO3)2] reacts with sodium sulfide (Na2S) to form cadmium sulfide(CdS) and…

Q: GRAVIMETRIC DE TERMINA TION OF AN UNKNOWN SULFATE 1. In the procedure involving heating the BaSO4…

A: We know that, Mass percentage of sulfate = ( Mass of sulfate / Mass of sample ) ×100

Q: How many grams of KI (MW = 165.91 g/mol) are needed to react with 45.3 g of MnO2 (MW = 86.94 g/mol)?

A: Given the mass of MnO2 = 45.3 g Molar mass of MnO2 = 86.94 g/mol  => Moles of MnO2 = 45.3 g * (1…

Q: 2.81grams of aluminum foil is mixed with 105.0 mL of 2.00 M CuSO4solution. The reaction is 2Al(s) +…

A: According to guidelines i can answer only 1st three sub parts

Q: Methanol (CH3OH) is a liquid at room temperature with a density of 7.91 ×10? kg/m³. In a certain…

A: Methanol has a variety of uses as a fuel, solvent, laboratory reagent, etc. In the given…

Q: (a) How many coulombs are required to plate a layer of chromium metal 0.25 mm thick on an auto…

A: Given area = 0.32 m2 density = 7.2 g/cm3 atomic weight = 52 g/mol thickness = 0.25 mm

Q: What mass of sulfate ions is in the sample? What is the mass percent of sulfate ion in the sample?…

A: Step : 1             Calculate the mass and percentage.

Q: 2.43 grams ol brominie (Bi)i dssolved in a 2.91 kg aqueOus soludon Howinny pei of Bin nis solution?…

A:

Q: Write a balanced chemical equation for the reaction thatoccurs when (a) Mg(s) reacts with Cl2(g);…

A: Chemical reaction- It consists of reactant (starting material) and products (substances formed in…

Q: 5. A 0.8102-g sample of impure Al,(CO,), decomposed with HCI; the liberated CO, was collected on…

A: Given, Mass of sample = 0.8102g

Q: 3. In a given dilution, the volume of the solution increases from 10.00 mL to 50.00 mL. We can…

A: The number of moles remains constant. Let the molarity of original solution be M1 and the molarity…

Q: 2quation A is, balance. 53 Lead (II oxide from an ore con be reduced to elemental lead by heating in…

A: Balanced equation is that in which the number of all the atoms of reactants is equal to the number…

Q: A 1.00 g mixture of H2O and D2O was electrolyzed producing H2(g), D2(g) and O2(g).  The H2(g) and…

A: Reactions involved are-Cl2+H2O→HOCl+HClCl2+D2O→DOCl+DCl Given, The HCl and DCl  were then…

Q: A sample weighing 3.165 g is a mixture of Fe, O, (molar mass = 159.69 g/mol) and Al,O, (molar mass =…

A: In given problem, Al2O3 is not reacted with H2. Hence write reaction for Fe2O3 and H2. Fe2O3 (s) +…

Q: Methanol (CH3OH) is a liquid at room temperature with a density of 7.91 x102 kg/m. In a certain…

A: Calculation of mass of methanol: M=V×d=2.91 mL×7.91×102×0.001 g/mL=2.302 g a) The reaction taking…

Q: A 0.896 g sample of impure magnesite, MgCO3, was decomposed with HCl; the liberated CO 2 was…

A: MgCO3 decomposed with HCl . The balance chemical equation for this reaction is :  MgCO3 + 2 HCl =…

Q: The accompanying photo shows the reaction between asolution of Cd(NO3)2 and one of Na2S. (a) What is…

A: The ionic equation is the chemical equation in which the ions of the molecules are represented as…