there are approximate 500 coffe beans in a glass jar. qualitative or quantitative

Q: A chemistry student weighs out 0.139 g of lactic acid (HC,H,O,) into a 250. mL volumetric flask and…

A: Mass of lactic acid = 0.139 g Volume of solution = 250 mL or 0.250 L Molar mass of lactic acid =…

Q: Concentration of DDT (molar mass= 354.49 g/mol) in groundwater sample is found to be 0.030 mg/250.0…

A: We have to predict the concentration in mmol/L.

Q: Suppose a student performed a similar standardization titration experiment using the data in the…

A: Balanced rxn for benzoic acid (C6H5COOH) and NaOH is given as follows-

Q: Eight hydrochloric acid solutions were titrated and the concentration was determined to be as listed…

A: We know that 1 M = 1000 mM

Q: How many milliliters of 11.0 M HCl(aq)11.0 M HCl(aq) are needed to prepare 275.0 mL275.0 mL of 1.00…

A: The molarity is equivalent to the ratio of the moles of the species to the volume of the solution.

Q: You have been assigned to carbonate a two-liter beverage. A typical carbonated beverage contains…

A: Given, Mass of CO2 per litre = 7 g Food acid = tartaric acid

Q: A 21.88 mL portion of a 0.379 M solution of hydrochloric acid, a monoprotic acid, is to be titrated…

A: Here we are required to find the volume of KOH required to reach the equivalence point.

Q: Disinfectant cleaner was the only substance that was entirely aqua Disinfectant Orange Juice…

A: NaHCO3 (sodium hydrogen carbonate) is baking soda and it is alkaline in nature whereas 3-5 % acetic…

Q: A sample of 7.89 g of Mg(OH)2 is added to 24.6 mL of 0.190 M HNO3. How many moles of HNO3 are…

A:

Q: 0.261 g of potassium hydrogen phthalate (KHP) was titrated with NaOH. When 16.8 mL of the NaOH had…

A: The molarity of a substance is defined as the number of moles of solute present per liter of…

Q: You have a stock solution of 14.8 MM NH3NH3. How many milliliters of this solution should you dilute…

A:

Q: A chemistry student weighs out 0.0973 g of phosphoric acid (H3PO4, a triprotic acid, into a 250. mL…

A: Given:Mass of phosphoric acid=0.0973 gVolume=250 mLMolarity of NaOH=0.1100 M Conversion:From mL to…

Q: Complete and balance the following neutralization reactions. Part A HNO3(aq) + Mg(OH)2 (s)→ Express…

A: Balanced the given neutralisation reaction --

Q: A chemistry student weighs out 0.111 g of sulfurous acid (H,So,), a diprotic acid, into a 250. mL…

A: The given data contains, mass of sulfurous acid = 0.111 g. Volume = 250 ml.  = 0.250 L. Molarity of…

Q: In the laboratory you dissolve 21.7 g of copper(II) fluoride in a volumetric flask and add water to…

A: Given data contains, Mass of copper (ii) fluoride is 21.7g. Volume of solution is 500ml. The moles…

Q: How many grams of KIO3 is required to prepare 250 mL, 0.01 M KIO3(aq) solution?

A: Molarity (M) of a solution is defined as the number of moles of solute dissolved per volume of the…

Q: Suppose you are titrating an acid of unknown concentration with a standardized base. At the…

A: This question is based on simple mathematics.

Q: In their second titration trial, a student calculated that a 27 mg sample of their antacid…

A:

Q: color.  What is the concentration of the NaOH solution? The molar mass

A: At equivalent point,  Geq. of NaOH  = Geq. of KHP N1V1 = N2V2 M × 16.8 /1000 = 0.261/204 M = 0.076M

Q: Complete and balance each of the following neutralization reactions. H2SO3(aq)+NaOH(aq)--> Express…

A:

Q: An analytical chemist weighs out 0.182 g of an unknown triprotic acid into a 250 mL volumetric flask…

A:

Q: A chemistry student weighs out 0.146 g of lactic acid (HC,H,O,) into a 250. mL volumetric flask and…

A: Mass of lactic acid = 0.146 gMolar mass of lactic acid = 90 g/molMoles of lactic acid = Mass of…

Q: it is time for the titration.  You measure 15.0 mL of the H2C2O4 solution with a 100-mL graduated…

A: The addition of solution of a known concentration to a solution having unknown concentration of…

Q: Sodium carbonate dissociates when it dissolves in water as follows:   If the concentration of…

A:

Q: How many milliliters of 12.0 M HCl(aq) are needed to prepare 315.0 mL of 1.00 M HCl(aq)?

A: Given, M1 = 1.00M HCl            M2 = 12.0M HCl            V1 = 315.0mL            V2 = ?

Q: How many millilitres of 0.590 mol L−1 H2SO4(aq) are required to completely neutralize 28.1 mL of…

A: The balanced chemical equation for the reaction between sulfuric acid (H2SO4) and potassium…

Q: An aqueous solution of methyl alcohol is made by transfering 7.90 mL of liquid methyl alcohol to a…

A: In this question a methyl alcohol solution is prepared in 100 mL volumetric flask. We have to…

Q: 2.How many milliliters of 12.0 M HCI (aq) are required to prepare 250 milliliters of 1.0 M HCl(aq)?

A: Molarity is defined as number of moles of solute dissolved per litre of the solution. Given initial…

Q: A 1.53 g sample of a mixture of FeCl2 and Fe(NO3)2 is treated with excess AgNO3(aq). The precipitate…

A: The objective of this question is to determine the percentage by mass of FeCl2 in the original…

Q: In the laboratory you dissolve 14.7 g of chromium(III) nitrate in a volumetric flask and add water…

A: Chromium(iii) nitrate is a strong electrolyte so completely dissociate into ions.