4.75 Describe the basic steps involved in gravimetricanalysis. How does this procedure help us determine theidentity of a compound or the purity of a compound ifits formula is known?

Q: The active ingredient in Antabuse, a drug used for the treatment of chronic alcoholism, is…

A: Introduction: Antabuse medicine is used in the treatment of alcoholism. It is also called a…

Q: The phosphorus in a 0.2222-g sample was precipitated as the slightly soluble (NH4)3PO4 • 12Mo O3.…

A: P2O5 = 2 (NH4)3PO4 • 12Mo O3 = 24 PbMoO4   Moles of PbMoO4 are, Moles = mass ÷ molar mass Moles =…

Q: Aqueous solutions of ammonia 1NH32 and bleach (active ingredient NaOCl) are sold as cleaning fluids,…

A:

Q: A 1.6394-g sample of limestone taken from Sinuhutan Cave in Brgy. Onop, Miagao was analyzed for Fe,…

A: ib

Q: Will a precipitate form if solutions of the soluble saltsPb(NO3)2 and KI are mixed?

A: The solutions of Pb(NO3)2 and KI leads to the formation of solution of potassium nitrate KNO3 and…

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: When aqueous solutions of K₂SO4 and CrCl3 NiBr2 and AgNO3 Li₂CO3 and Csl O Nal and KBr O KOH and…

A: In a double displacement reaction if one of the product is soluble and another is insoluble then…

Q: A herbicide contains 2,4-D (2,4-dichlorophenoxyacetic acid), C8 H6 Cl2 O3. A 1.265-g sample of the…

A: A question based on mole concept that is to be accomplished.

Q: A 0.2417g sample of a compound composed of C,H,O,Cl only, is burned in oxygen yielding 0.4964g of…

A:

Q: Aqueous solutions of ammonia (NH3) and bleach (activeingredient NaOCl) are sold as cleaning fluids,…

A: Hey, since there are multiple sub-part questions posted, we will answer first three questions. If…

Q: The phosphorus in a 0.2091-g sample was precipitated as the slightly soluble (NH4)3PO4 • 12 MoO3.…

A: Given Mass of PbMoO4 = 0.2922 gram Total yield of sample  = 0.2091 gram We have to calculate the…

Q: 5.587 grams of Pb(NO3)2 are reacted with 5.587 grams of Na2S, and the resulting precipitate is…

A: The given reaction is as follows. Pb(NO3)2aq+Na2Saq→2NaNO3aq+PbSs The precipitate formed in this…

Q: A 2.5624-g sample of a pure solid alkali metal chloride is dissolved in water and treated with…

A:

Q: How many ions are produced when c6h12o6 dissolves in water?

A: C6H12O6 is glucose which is not an electrolyte. This is when dissolved in the water would lead to no…

Q: The drug Antabuse is used to treat alcoholism by making patients violently ill if they drink…

A: The neutralization reactions involve the reactions between an acid and a base to produce its…

Q: The determination of the impurity of iodides in potassium bromide is carried out: A) Reaction with…

A: Qualitative analysis. Solved in step 2.

Q: Vinegar contains acetic acid (HC2H3O2), which is responsible for its acidity. In one analysis of a…

A:

Q: A sample of pearl ash (impure K2CO3) is titrated with 0.2500 N HCl. If the sample weighs 1.1000 g…

A: Normality is defined as the amount of solute expressed in the number of gram equivalents present per…

Q: Formaldehyde (CH2O, MM = 30.03) has a multitude of uses including tissue preservation. Formalin is a…

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

Q: ‍‍‍‍‍‍‍‍‍‍‍‍S₈(s)+Na₂So₃(aq)+H₂O(℩)→Na₂S₂O₃·5H₂)(s) (unbalanced) What is the theoretical yield of…

A: The theoretical yield of a substance is the expected yield that is found by calculation using the…

Q: 3. The recommended daily allowance (RDA) of iron for females ages 18-50 is 18 mg per day. In theory,…

A: We have to find the percentage of iron in an iron sulphate tablet.

Q: 6NH2OH + 2Bi2Bi(OH)3 + 3N2H4 In the above reaction, what is the oxidation state change of…

A: The oxidation state (OS) of an element corresponds to the number of electrons, e-, that an atom…

Q: What is the maximum mass of Pl that can be prepared from 7.75 gofP0, and 11.86 g of iedine accenting…

A: Given: Mass of P4O6 = 7.75 g Mass of I2 = 11.86 g Molar mass of P4O6 = 219.88 g/mol Molar mass of I2…

Q: What is the mass of fish, in kilograms, that one would have to consume to obtain a fatal dose of…

A: The mass of fish, in kilograms and pounds has to be given,

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: A sample of fuming suifuric acid containing only SOs and sulfuric acid weighs 1.400 grams and…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

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: evidence of reaction such as: (a) the formation of a precipitate, (b) the formation of a gas, (c)…

A: Evidence of a reaction is the proof ofa reaction to be occured.

Q: What is the coefficient of Mn2+ when the reaction, Mn2+ + MnO4- yields MnO2 is balanced in an…

A: The oxidation half-reaction and reduction half-reaction for the given reaction is shown in equation…

Q: What volume of 0.0521 M Ba(OH)2is required to neutralize exactly 14.20 mL of 0.141 MH3PO4?…

A: n-factor of barium hydroxide is 2 and that of phosphoric acid is 3.

Q: 19. A product weighing 12.11 g was isolated/obtained in the laboratory. The maximum amount of…

A: Given,  A product weighing 12.11g was obtained in the experiment, the maximum product can be…

Q: A 0.8761 g sample of iron ore is dissolved in acid, the iron is oxidized to the +3 state and then…

A:

Q: 43. In the preparation of Rochelle salt (MW = 282.83 g/mol), 7.2 grams of monohydrated Sodium…

A: Given data: The mass of monohydrated sodium carbonate is 7.2 g. The molecular weight of…

Q: Thyroxine (C₁₅H₁₁I₄NO₄) is a hormone synthesized by thethyroid gland and used to control many…

A:

Q: A sample of fuming sulfuric acid containing only SOs and sulfuric acid weighs 1.400 grams and…

A: Given: Mass of mixture = 1.400 g. Concentration of NaOH = 0.850 N = 0.850 M…

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: How many grams of pure Na2CO3 must be weighed and dissolved in a solution, if you are to prepare a…

A: Given-> Normality of HCl = 0.1478 N Volume of HCl = 61.75 ml Molecular weight of Na2CO3 = 106…

Q: 6. A 0.4622-g sample of potassium hyd rogen phthalate was dissolved in 50 mL of deionized water and…

A: The molarity of a solution is the ratio of number of moles of a substance to the volume of solution…

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: State whether the following analysis is quantitative or qualitative analysis or both. i)…

A: In qualitative chemical analysis, we identify whether a chemical substance of interest is present in…

Q: A powder contains FeSO4⋅7H2OFeSO4⋅7H2O (molar mass=278.01 g/mol),(molar mass=278.01 g/mol), among…

A: The reactions taking place are as follows: FeSO4.7H2O+HNO3→Fe3+2Fe3++NH3→Fe2O3.xH2OFe2O3.xH2O→Fe2O3…

Q: A herbicide contains 2,4-D (2,4-dichlorophenoxyacetic acid), C8 H6 Cl2 O3. A 1.162-g sample of the…

A: Here we are required to find the mass percentage of 2,4-D in sample

Q: 6. Under suitable conditions, thiourea, CS(NH2)2, is oxidized to sulfate by solutions of potassium…

A: we establish the relation between the  mole  of reactant and mole of product

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: 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…

Q: 4. A mixture of KC1O3 and MnO2 weighing 1.75g was heated to 3000C until decomposition was complete.…

A: Number of Mole- Ratio of given mass of substance to the molar mass of substance is called number of…

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".