There is a simple method available online on how to detect lead in lipstick. Find the method, describe the steps in detail, and the expected result that would reveal if there is lead in a sample of lipstick.

Q: Albumin is a protein found in blood. If the concentration of this protein is 6.00 x 102 micromole…

A: The concentration albumin protein in blood is =  6.00 x 102 micromole per liter Molecular mass of…

Q: If it is found that 5.00 mL of a sample has a mass of 5.250 g, what is the concentration of the…

A: Amount of substance present in 100ml of solution is defined as the percentage mass by volume. %m/v =…

Q: Normal saline solution (the kind you receive intravenously for medical purposes) is made by…

A: Molarity is defined as the number of moles of solute present in 1 liter of solution.  Mathematically…

Q: e the concentration in mo!

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Q: You perform your first titration using your NaOH with a KHP solution. Your KHP solution is made with…

A:

Q: a) If 42.1 mL of 1.02 M sodium hydroxide, measured using a graduated cylinder, is placed in a beaker…

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Q: Suppose 1.78 g of sodium bromide is dissolved in 350. mL of a 0.30 M aqueous solution of silver…

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Q: Most analytical machines used in science can either measure absorbance of light, like the…

A: Given: mg/L NO3- Absorbance 0 0 0.1 0.183 0.3 0.542 0.5 0.914 0.7 1.298 1 1.61

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A: Given : solution of Co2+ (aq) and Cu2+ (aq). 1) Adding NaOH : Since addition of NaOH will bring OH-…

Q: why is statistics itself is important in the field of chemistry especially in analytical chemistry?…

A: Answer:

Q: One way in which the useful metal copper is produced is by dissolving the mineral azurite, which…

A: The balanced reaction taking place is given as, => Fe (s) + CuSO4 (aq) -------> Cu (s) + FeSO4…

Q: A chemist prepares a solution of silver(I) perchlorate (AgCIO,) by measuring out 5.9 × 10´ µµmol of…

A: Concentration in terms of molarity is defined as the moles of solute present per litre of the…

Q: dont provide handwriting solution ...

A: To find the chloride ion (Cl-) concentration in the resulting solution, we need to calculate the…

Q: Suppose 2.04g  of potassium chloride is dissolved in  300.mL  of a  40.0mM  aqueous solution of…

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Q: Two aqueous solutions of KBr and AgNO3 are mixed. Write out what major chemical species will be…

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Q: was titrated with 0.121 M NaOH. The initial burette reading was 1.03 mL, and the final reading was…

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Q: Identify the oxidizing agent and the reducing agent for Mg(s) +Fe²+ (aq) → Mg²+ (aq)+Fe(s). Express…

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Q: The ocean is a heterogeneous fluid with different concentrations of zinc at different depths.…

A: Conceptual interpretation - As we know that ocean is the heterogeneous fluid with different…

Q: 2 Al(s)+3CuCl,(aq)→3Cu(s)+2 AlCl, (aq) A piece of aluminum metal is placed in an aqueous solution of…

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Q: A chemist prepares a solution of aluminum chloride (AICI,) by measuring out 49.6 umol of aluminum…

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Q: A)  Calculate the molarity 12.21 mg KI in 107.6 mL of solution         Express your answer using…

A: Molarity of a solution is defined as the number of moles of solute to the total volume of solution.

Q: Suppose 0.190 g of lead(II) acetate is dissolved in 350. mL of a 41.0 m M aqueous solution of…

A: Details

Q: Mass of empty beaker: 30.453 g 31.909 g Mass of beaker plus sample, before heating: 31.176 g Mass of…

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Q: 10. Concentrated nitric acid, HNO3(aq), has a concentration of 15.7 M. What volume of concentrated…

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Q: carrying out Part 1 of this experiment, assume an excess of HCl(aq) reacts with 0.426 g of Mg(s). If…

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Q: An aqueous HCI solution containing 36.71 % HCl by weight has a density of 1.222 g/mL. Calculate its…

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Q: You were tasked to prepare KNO3 solution with a concentration of 0.866 M. What volume (in mL) of…

A: When we make solution of any concentration from the given stock solution then we use the equation…

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Q: What are the qualitative and quantitative approaches to measure densities, respectively? In air, the…

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Q: A 5.000 g of metal ore is dissolved in 20.000 mL of acid (density 1.840 g/mL). The mass of the…

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Q: In the laboratory you dissolve 16.6 g of magnesium chloride in a volumetric flask and add water to a…

A:

Q: 1. When you arrive at the lab, 2.0 M H2SO4(aq) and 2.0 M HC2H3O2(aq) will be present. You will need…

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Q: A chemist prepares a solution of silver(I) nitrate (AGNO,) by measuring out 245. µmol of silver(I)…

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Q: Most analytical machines used in science can either measure absorbance of light, like the…

A: Concentration of unknown solution can be determined from the graph of concentration vs. Absorbance.

Q: The concentration of a stock solution of potassium dichromate is 0.50 mol/L. If you were to take 200…

A:

Q: A chemist prepares a solution of iron (II) chloride (FeCl₂) by measuring out 1.0 g of FeCl₂ into a…

A: According to given question,

Q: Suppose 1.24 g of sodium chloride is dissolved in 200. mL of a 28.0 m M aqueous solution of silver…

A:

Q: Using the density of commercial bleach (1.08g/ml), calculate the mass percent of sodium hypochlorite…

A: Density of bleech = 1.08 g.ml-  Molar mass of sodium hypochlorite = 74.44 g.mol-

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

A:

Q: 20.0 grams of Sodium hydroxide was dissolved in water up to 500 mL. Calculate the Normality of the…

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Q: Based on this. What was the percentage by mass of water in the sample?

A: Given sample is = MgSO4·7H2OMolar mass of  MgSO4·7H2OMgSO4·7H2O =  24 + 32 + 16×4 + 72+16…

Q: Consider the balanced chemical equations shown below. When a 6.00 g sample of a mixture of iron (Fe)…

A: According to the question, we have: Mass of mixture of Fe and Al = 6.00 g Excess of HCl is present…

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".