How do you measure the amount of heavy metals concentration in soil?

Q: Balance the following chemical equations and indicate the type of reaction taking place. If the…

A: we need to balance equation 3 and 4

Q: Moles = Molarity (Moles/Liter) * Liters Question: How many grams of HCI would be required to make 1…

A: Molarity = moles ÷ volume in litre

Q: A free energy diagram for a generic reaction, reactants products, shown below. On the horizontal…

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Q: A 40.00-mL aliquot of 0.05000 M HNO2 is diluted to 75.00 mL and titrated with 0.0800 M Ce4+. The pH…

A: The potential of the indicator electrode with respect to a saturated calomel reference electrode…

Q: CH₂CH=CH₂ NBS, H₂O DMSO OH orosle CH3CHCH₂Br

A: 1. The reaction proceeds through the formation of cyclic bromonium ion. 2. The nucleophilic attack…

Q: Describe a non-electrolyte solution. True or false: the solubility of solids in water increases with…

A: 1) A non-electrolyte solution is a solution that doesn't contain any free ions. It formed by adding…

Q: For the first blank select an answer with a (1) in front. For the second blank, select an answer…

A: Ans. (1) The expected sign  for voltage = +(positive) According to electrical engineers, in an…

Q: Hydrogen peroxide, H₂O₂, has a density of 1.45 g/cm³ and decomposes spontaneously but slowly. The…

A: Given that,  Density of H2O2 solution = 1.45 g/cm3 = 1.45 g/mL  [* 1 cm3 = 1 mL ]  The steps for…

Q: Below is the mass spectrum of 2-methyl butane. Identify the base peak and molecular ion peak.…

A: below answer is given

Q: Name the following complex ions. formula Mn Br [Co (CN),] [Cr(CO₂)₂] name X S ?

A: Name the given complexes ---

Q: How many liters of pure oxygen gas, measured at STP, are required for the complete combustion of…

A: Given :- volume of CH4 = 11.2 L  To calculate :- volume of O2(at STP) required for the complete…

Q: Consider the following redox reaction under standard conditions: 2 Li+ (aq) + Fe (s) → Fe2+ (aq) + 2…

A: Given cell reaction, 2 Li+(aq) + Fe(s) → Fe2+(aq) + 2 Li(s)

Q: Give a specific example of halohydrin formation of alkenes including the starting material…

A: In this question, we have to Give a specific example of halohydrin formation of alkenes including…

Q: What is the [H+] of a 0.650 M solution of acetic acid? Ka (acetic acid) = 1.8 x 10-5.

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Q: For the reaction (NH4)2S (s) = N2 (g) + H2S (g) + 3 H2 (g), the expression for Kc is

A: Given ;  (NH4)2S(s) <-----> N2(g) + H2S(g) + 3H2(g)  To write :-  Expression for Kc

Q: From the following list, choose the correct reagents and calculate the volumes needed to make 500.0…

A: We will choose the correct reagents and calculate the volumes needed to make 500.0 mL of a 0.20 M…

Q: The reaction CO + Cl2 COCl2 was studied by the initial rate method and the following data were…

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Q: Topics] [References] Use the References to access important values if needed for this question. An…

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Q: Which of the following conditions causes a gas to behave ideally?  Select all that apply. small…

A: In the given question we need to tell about the condition that is suitable for the gas to behave…

Q: The equilibrium constant of the reaction in aqueous solution is K = 5.00.…

A: The reaction given is, => CH3Hg(glutathione)+ (aq) + Cysteine (aq) → CH3HG(cysteine)+ (aq) +…

Q: 10) Classify the bonds of the following compounds as polar or non-polar. a) CH b) CO₂ c) NF,

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: 4. Below is the structure of 4-(dimethylamino)pyridine. Show what is the structures of possible…

A: Here amino group donates electron pair to benzene ring. Therefore pyridine nitrogen get negative…

Q: The mechanism for NO2 (g) + CO (g) → NO (g) + CO2 (g) is thought to be: 2 NO2 → NO3 + NO (slow)…

A: Rate of a reaction is given by slowest step of a reaction and hence it's rate can be given be rate…

Q: At 1000K, the value of Kp for the following reaction equals 0.338. 2 SO3 (g) = 2 SO2 (g) + O2 (g) Kp…

A: To find the direction of reactions we calculate the reaction quotient and compare it with…

Q: A student wishes to determine the chloride ion concentration in a water sample at 25 °C using a…

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Q: Write the chemical formula of the following complex ions. formula name 0 hexabromomolybdate(V)…

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Q: 4) The percent moisture content of the following results weight of crucible and wet sample is…

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Q: ! Given AG°f [NO] = 87 kJ/mol and AG°f [N20] = 104 kJ/mol, what is AG for the following reaction? 2…

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Q: synthesize m form of salicylic acid from benzene

A: synthesize  of salicylic acid from benzene is given below

Q: Which of the following is necessarily true for a galvanic cell with the following reaction?…

A: We will checking the following options for suitable answer. This question is from Electrochemistry…

Q: Write both an equation using lewis structures and a balanced chemical equation for the reaction…

A: In this question, we have to write both an equation using lewis structures and a balanced chemical…

Q: Methylacetate 2. Predict IR signal and their values in the assigned molecule (Part B). Also predict…

A: Ester compound shows an characteristic carbonyl absorption at 1735 cm-1 and 1H-NMR spectrum gives an…

Q: Calculate the volume of 0.230-M NaOH solution needed to completely neutralize 64.1 mL of a 0.850-M…

A:

Q: A student reacts benzene, C6H6, with bromine, Br2, to prepare bromobenzene, C6H5Br, and HBr. C6H6 +…

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Q: Which of the following compounds is MOST reactive in an alkaline hydrolysis reaction (reaction with…

A: This question is related to organic chemistry. Alkaline hydrolysis of carboxylic acid derivatives…

Q: 6. Calculate [H3PO4], [H2PO4-], [HPO4²-], [PO4³-], [H3O+], [OH-], and [Cl-] in a mixture that is…

A:

Q: For the reaction below, A+2B → AB2 if AG = -19.9 kJ.mol-1, what is the value of K at 298 K ?

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Q: The half-reactions in nicad (nickel-cadmium) batteries are: 2NiO (OH) (s) + 2H₂O(1) +2e¯ 2Ni(OH)₂…

A: Net ionic equation 2NiO(OH)(s) + 2H2O(l) + Cd(s) ----> 2Ni(OH)2(s) + Cd(OH)2(s)

Q: Calculate [H3PO4], [H₂PO4], [HPO4²-], [PO4³-], [H3O+], [OH-], and [CI-] in a mixture that is…

A: H3PO4 is a triprotic weak acid with pKa values of 2.12, 7.21, and 12.32.  Concentration of HCl =…

Q: Using Eº cell, choose all the reactions that are spontaneous. Sn2+ (aq) + Pb2+ 1 (aq) Pb(s) + Sn4+…

A: Spontenous reactions are those whose E°cell value is positive.  So we can calculate E°cell for each…

Q: A chemical reaction is shown: 2NO(g) + O₂(g) → 2NO₂(g). How many liters of pure oxygen gas, measured…

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Q: What is the value of AG (kJ mol-1) for this reaction at 320.1 °C? The data refer to 25 °C: 2 PC13…

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Q: QUESTION 28 Which one of the following is a weak acid? O A. nitric acid, HNO3 OB. hydrochloric acid,…

A: Answer the given question,

Q: H₂C-CH-CH3 "I I Br OH

A: In this question we have to tell the IUPAC name of the compound

Q: Select all of the following reactions that would be expected to provide a positive change in…

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Q: Calculate [H3PO4], [H2PO4], [HPO42-], [PO4³-], [H3O+], [OH-], and [Cl] in a mixture that is…

A:

Q: Given the following equation: 2 C4H10 + 13 02 → 8 CO₂ + 10 H₂O How many moles of O₂ are needed to…

A: When butane is burnt in presence of oxygen it gives water and carbon dioxide and water. And…

Q: Calculate the mole fraction of He in a mixture of He and N2 that contains 4.25 g of He and 29.5 g of…

A:

Q: a. Calculate E for the process E° 0.799 AgIO3+eAg +10 (s) E 18 b. Write the Nernst equation…

A: The expression for EAg is given as,

Q: at is the oxidation number of the nitrogen in NO3? +7 +3 0 +4 +6 +5

A: