A 1185 mL sample of drinking water was found to contain 20.5 mg of lead. Calculate the concentration of lead in milligrams per liter. concentration: mg/L

Q: A student wants to make a 250 mL stock solution with a concentration of 1000 mg -N/L. The student…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: A 112-mg sample of Na2CO3 is dissolved in H2O to give 2.55 L of solution. What is the concentration…

A:

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: In the laboratory you are asked to make a 0.434 m calcium iodide solution using 375 grams of water.…

A: Given information,   0.434 m calcium iodide solution   Mass of water = 375 grams = 0.375 kg

Q: A doctor prescribes a patient to take 25 mL of a medicine every night. If that medicine is listed as…

A:

Q: What is the concentration in ppm and ppb of a solution that contains 45 mg of lead in 1750 mL of…

A:

Q: A 1415 mL sample of drinking water was found to contain 82.0 mg of lead. Calculate the concentration…

A: Given Mass of lead       = 82 mg  Volume of water = 1415 mL        1000 mL     =  1 Liter       1415…

Q: Casey needs to prepare 100.0 mL of a 0.50 M NaOH solution from a 2.0 M NaOH solution. How should…

A: The given problem relates to stock dilution, so we can use the below relation to calculate the…

Q: You were tasked to prepare nitric acid with a concentration of 1.64 M. What will be the volume (in…

A:

Q: 100.0 mL of a 0.625 M solution of KBr is diluted to 500.0 mL. What is the new concentration of the…

A: The process of dilution produces a solution with certain lower concentration of solute by adding…

Q: 0.15 M AlCl3 solution. How many grams of aluminum chloride should the chemist use?

A: Molarity is defined as number of solute present in 1000 ml of solution . Mole=…

Q: A doctor orders that a patient recieve 2.8 X 10^-3 mole of sodium chloride. The only solution…

A: Given: Amount of NaCl patient received = 2.8×10-3 mol Solution available contains 1.00 g per 100 mL…

Q: a) Determine the mass of ammonium nitrate dissolved in 750 mL of a 3.82 mol/L solution.…

A: Given: Initial volume V1= 750mL= 0.75L Final volume V2= 5.0L Molarity M1 = 3.82M

Q: What is the molarity and Normality of a solution of HNO, that contains 14.6 grams HNO, in 0.1 L of…

A: Given, 14.6g HNO3 in 0.1L

Q: When patients are given an injection of a drug, it gets diluted in the blood stream. For pain…

A:

Q: The label for oxacillin 2 g vial states that 11.5 mL of Sterile Water for Injection is needed to…

A: Concentration in mg/mL means 1 mg of solute is present in 1 mL of solution. For a solution of same…

Q: A sample of water is analyzed for various ions.  If the sample has the following ion concentrations:…

A: Concentration in ppm = (Weight in mg) ÷ (Volume in Litre)

Q: A lab technician prepares a 1.8M aqueous solution of copper (II) sulphate (CuSO4). The density of…

A: Number of moles of  CuSO4 in 1 L of solution = Molarity = 1.8  Mass of solution = Volume x density =…

Q: A chemist makes 640.mL of mercury(II) iodide HgI2 working solution by adding distilled water to…

A: When a solution of Molarity M1  and volume V1 is diluted by adding water to a final volume V2  and…

Q: A vial of amoxicillin contains 590. mgmg in 2.6 mLmL of solution. What volume of the solution…

A: Molarity is defined as no.of moles of solute devided by volume of solution in liter.

Q: You were tasked to prepare nitric acid with a concentration of 1.28 M. What will be the volume (in…

A: Recall the data, M1=1.28M, V1=? M2=3.0M , V2=139 ml

Q: How many grams of potassium chloride are contained in 426 mL of a solution that is 1.64 M in…

A: Military is a concentration term and can be expressed in terms of number of moles in one liter of…

Q: Your lab partner gets out a 100-mL graduated cylinder and a 100-mL beaker to prepare 100.00 mL of…

A: We already have a 1.201 M solution. We need to dilute it to make 100ml of 0.1201 M

Q: what volume of concentrated HCl solution contains 125 g of HCl given the information: 37.2%…

A: From given mass % it is clear that in 100mL of solution, 37.2 g of HCl is present.

Q: Calculate the concentration in /molL of the chemist's barium acetate solution.

A: Number of moles = mass/molar mass  Molarity = moles/volume of solution(in L)

Q: H.W: 1- A solution of KCI (its volume 500 mL) contains 7.45 ppm KCI. Calculate its Molarity and…

A: Given,  Volume of solution = 500 ml =0.50 L ppm concentration of KCl = 7.45 ppm Molar mass of KCl =…

Q: 2.00 grams of Sodium hydroxide was dissolved in water up to 500 mL. Calculate the : Normality of the…

A: Solution -

Q: How many grams of NaCl is present in 100mL of salt water and 70g of water? The salt water density is…

A: Mass of solution = volume of solution x density of solution = 100 mL x 1.08 g/mL…

Q: In a standardization experiment, 0.5067 g of primary standard sodium carbonate (Na2CO3) was exactly…

A: Provided amount of Na2CO3=0.5067 g Molar mass of Na2CO3=105.989g/mol Equivalent mass of Na2CO3 =…

Q: 8. The density of methanolc acid, HCOOH Is 1.22 g/mL If 33.5 mL of methanoic acid is dissolved in…

A:

Q: What mass (g) of calcium chloride do you need to make 150.0 mL of a 0.750 M solution?

A: Molarity is defined as the number of moles of solutes present in per litre of solution.

Q: A sample of barium chloride weighing 20.5g was dissolved in enough water to make a solution with a…

A: Given, Mass of barium chloride = 20.5 g  Concentration = 0.175 M                            = 0.175…

Q: A doctor has ordered that a patient be given 20g of glucose, which is available in a concentration…

A: The concentration of the solution is 75 g glucose/ 1000 mL of solution, it means that 75 g of…

Q: Arsenic was measured in Chesapeake Bay water at a concentration of 512 mg/m3. What is the…

A: Given data,  Concentration = 512 mg/m3  1 oz = 28.35 g  1 gal = 3.78 L  1 m3 = 1000 L

Q: The bottle labelled “concentrated hydrochloric acid” in the lab contains 12.0 mol of HCl per liter…

A:

Q: 7. What volume in mL of solution is needed for 70.7g KBr to make a 2.54M KBr solution?

A: Given Mass of KBr = 70.7 g Molarity of KBr solution = 2.54M

Q: A Patient was injected with 5.00 ml of a 3.0 gm/10mL codeine solution. How many grams of codeine…

A: Patient was injected with 5.00 ml of a 3.0 gm/10mL codeine solution then,  Gram of codeine?

Q: You have 6L 5M sodium chloride stock solution and you want to prepare 2L 250mM NaCl solution. How…

A:

Q: H.W: 1- A solution of KCI (its volume =500 mL) contains 7.45 ppm KCI Calculate Molarity and…

A:

Q: The volume of a 1.00 M HCl solution must be diluted to obtain 200 mL of a 0.250 M HC1 solution is…

A: The Volume of 1.00 M HCl solution after dilution can be calculated as follows: M1V1 = M2V2

Q: Using the chart provided, which substance has a solubility of 30.grams of solute per 10 grams of…

A:

Q: 11. The measured drug dosage is a. 33 mL b. 0.10 mg drug (1 kg body mass) 82 kg patient where 15 mL…

A: Volume of drug required to give patient can be calculated from the required mass of drug and…

Q: How many mL of a 5.02% copper(I) bromide solution contains 2.66 g copper(I) bromide?  The density of…

A: Mass percent :- The mass of solute present in 100 grams of solution is known as its mass percent .…

Q: A CaCl2 solution is administered to patients to increase their blood calcium levels. If a patient's…

A:

Q: A chemistry student needs 75.00 g of acetyl bromide for an experiment. She has available 150. g of a…

A: Given the desired mass of acetyl bromide = 75.00 g  % w/w of the solution of acetyl bromide in…

Q: Conversion of units: ✓ Blood Sodium 100 mmol/mL to mEq/L ✓ Blood CO2 15 vol % to mmol/L ✓ Blood…

A: We have to convert blood sodium 100 mmol/mL to mEq/L. For sodium 1 mole = 1 equivalent. So, 100…

Q: What is the normality of 0.25 F sulfurous acid

A: The chemical formula of Sulfurous acid is H2SO3. Molarity and Normality are ways to measure the…

Q: 2. A solution has a concentration of 3.5 grams per liter. What is its concentration in parts per…

A: Parts per thousand (ppm) concentration is the gram of solute present in a liter of solution. Parts…