A concentrated solution of compound A in the same solvent was diluted from an initial volume of 2.00 mL to a final volume of 25.00 mL and then had an absorbance of 0.733. What is the concentration of A in the 25.00-mL solution?

Q: The formaldehyde content of a pesticide was determined by weighing 0.9327 g of the liquid sample…

A: The given information is: Mass of liquid sample = 0.9327 g Conc. of NaOH = 0.08624 M Volume of NaOH…

Q: Grignard reagents, which contain a C—Mg bond, have thegeneral formula CH₃—(CH₂)ₓ—MgBr and are…

A: GIVEN: General formula CH₃—(CH₂)ₓ—MgBr To Solve: a)mass percentof Mg if x=0 b) mass percent of Mg if…

Q: para cresol(p-cresol) known as bug killer and sanitizer. By combuston analysis of 0,3654 g sample of…

A: The molar mass of CO2 = 44 g/mol No of moles of CO2 = nCO2=Given massMolar mass =1.042 g44 g/mol…

Q: Which is correct and which is incorrect from the following sentences? Proposition True False (a) The…

A: The solution is shown below

Q: (a) (b) (c) Br Br Nal acetone NaCN NaSCH 3

A:

Q: Write a balanced chemical equation for the reac- tion of bromine and triolein, a triglyceride of…

A:

Q: Consider the reaction between H₂PO4 and NH, to produce (NH4)₂HPO4. The molar mass of H₂PO4 is…

A: Reaction is From stoichiometry and balanced chemical equation,Molar ratio is,H3PO4 : NH3 = 1 :…

Q: 3. a) You'll saponify your oil by combining it with equal volumes of 95% ethanol and 25% sodium…

A: 3) a)95% ethanol act as a catalyst in saponification reaction. (Catalyst used to initiate the…

Q: A student created a solution in a 100 mL volumetric flask by adding 3.753 g KNO3 and 25.77 mL 0.358…

A:

Q: Write the name of each of the following substances: (W (a) (HCOO)2Ni-½H2O (b) Zn(SCN)2 (c) Ag2CrO4…

A: Note: Since you have posted multiple independent questions in the same request, we will solve the…

Q: A 1.219-g containing (NH4)2SO4, NH4NO3, and nonreactive substances was diluted to 200 mL in a…

A: For the first titration, the given data are: Mass of the given  Volume of the  Volume of the sample…

Q: For each of the following chemical reactions, provide the following three items: (1) the chemical…

A: Here we have to predict the types of reactions and chemical formulas and state of reactants and…

Q: Predict the product of the following reactions: (a) BaCl2(ag) + K,SO4(aq) (b) Fe,(SO4)3(aq)…

A: Balancing a chemical equation involves making the number of atoms of an element on each side equal

Q: A gaseous binary compound has a vapor density that is 1.94 times that of oxygen at the same…

A: Given data contains, Vapor density of gaseous binary compound is 1.94. Weight of the gas is 1.39g.…

Q: Complete and balance the following equations: (a) NaOCH3(8) + H2O(I) (b) CuO(s) + HNO;(aq) (c)…

A: The complete balanced chemical equation for the given reactions are:

Q: (2) An ore is analyzed for the manganese content by converting the manganese to Mn,0, and weighing…

A: Mass of total sample = 1.52g mass of Mn2O3 = 0.126g mass % of Mn2O3 =( mass of Mn2O3/total mass of…

Q: A 10.231-g sample of window cleaner containing ammonia was diluted with 39.466 g of water. Then…

A:

Q: Potassium dichromate has several industrial applications. To determine the purity of the salt that…

A: KI or I-(aq) reduces potassium dichromate, K2Cr2O7 to Cr3+(aq) and itself gets oxidized to I2. The…

Q: Write the chemical reaction of Iron Sulfide (FeS2) to create Sulfuric acid in mines. It reacts with…

A: It is used in the preparation of hydrogen sulphide gas.In hair dyes, paint, ceramics, bottles and…

Q: Tartazine, C16H9N409Na352, is a synthetic yellow food dye that provides a lemon color to various…

A: The objective of the question is to find out the mass of tartrazine in grams that corresponds to 7 x…

Q: Write a balanced equation for the reaction of nitric acid, HNO3(aq), with magnesium hydroxide,…

A:

Q: 6. A shipment of crude sodium carbonate must be assayed for its Na2CO3 con- tent. You receive a…

A: Weight of crude Na2CO3 = 9.709 g Volume of solution= 1L Molarity of HCl = 0.1022 M Volume of HCl…

Q: 3.39 (a) Which of the following molecules can hydrogen bond to another molecule like itself? (b)…

A: Hydrogen bonding is force of attraction between hydrogen atom that covalently bonded with…

Q: ii) A hydride which on electrolysis in the molten state gives hydrogen at the anode do which in

A: HYDRIDES: In chemistry, the hydrogen atom with a negative charge is known as a hydride. The hydride…

Q: A K2SO4•Al2(SO4)3•24H2O preparation is tested for its purity by converting first to Al(OH)3 then…

A: The answer and explanation is as given below:

Q: This

A: According to the question, a 235.2 g sample of ground water is analyzed for calcium. The Ca2+ in the…

Q: The protein content of a sample was determined by a Kjeldahl analysis for nitrogen. After digesting…

A: The question is based on the concept of quantitative analysis. We quantitatively estimate the…

Q: The elements of Group 1-B (Cu, Ag, and Au) are sometimes referred to as the “coinage  metals.” Why?…

A: Elements Copper ( Cu),  Silver ( Ag) and Gold (Au) are called as 'coinage metals' because as they…

Q: A solution of HCI is found to be 0.2480 N and 27.54 mL of it is equivalent to 19.53 mL of standard…

A: The number of moles of a substance is determined as the mass of a substance upon its molar mass. The…

Q: A solution of H2SO4 is found to be 0.5172 N and 39.65 mL of it are equivalent to 21.74 mL of…

A: Given that Normality of the H2SO4 solution is 0.5172 N Volume of the H2SO4 solution is 39.65 mL…

Q: 1. Explain the term empirical formula and a molecular formula and state how they two differ.

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

Q: he metal has a molar mass of 206.77 gmol and crystallizes in a body centered lattice and has a…

A: Given : Molar mass =  206.77 g/mol Density =  14.1 g/cm3.

Q: A chemistry student weighs out 0.0202 g of acrylic acid (HCH,CHCO, into a 250. mL volumetric flask…

A: To calculate the volume of NaOH solution needed , we would first write a reaction between acrylic…

Q: Balance the following equations. (Use the lowest possible integer coefficients.) (a) UO₂ (s) + HF()…

A:

Q: 2.) An analyte solution was prepared using 1.1278 g of a diprotic acid and 25.0 mL of distilled…

A: Here we are required to find the Molarity of undiluted analyte and molecular weight of diprotic acid…

Q: Many chemical compounds contain impurities. Crude potassium carbonate (K2CO3) obtained from the…

A:

Q: Hydrazine 1N2H42 and dinitrogen tetroxide 1N2O42 form a self-igniting mixture that has been used as…

A: Balanced chemical equation for the reaction of hydrazine and dinitrogen tetroxide to be written.

Q: 6. A 6.881-g sample containing magnesium chloride and sodium chloride was dissolved in sufficient…

A:

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".