A biochemist carefully measures the molarity of salt in  33.mL  of photobacterium cell growth medium to be  54.   mM .   Unfortunately, a careless graduate student forgets to cover the container of growth medium and a substantial amount of the solvent evaporates. The volume of the cell growth medium falls to  9.1mL . Calculate the new molarity of salt in the photobacterium cell growth medium. Round each of your answers to  2

Q: In running a Beer’s Law lab, you are given 50.00 mL of a 25.00 µM solution of the organic pigment…

A: The initial concentration of crystal violet is 25.00 µM and volume of this solution is 50.00 mL…

Q: The toxicity of DDT (C14H9CI5) led to a ban on its use in the United States in 1972. Determinations…

A: Molecular formula of DDT - C14H9Cl5 Molecular Mass of DDT - 354.49 g/mol Number of moles = mass of…

Q: A chemistry student weighs out 0.0457 g of formic acid (HCHO,) into a 250. mL volumetric flask and…

A: Given- Weight of formic acid =0.0457g Volume volumetric flask=250mL Concentration of NaOH =0.1100 M…

Q: Convert the experimental glucose concentration (provided in the table below) from mM (millimolar) to…

A:

Q: Imagine you collected a master batch (undiluted) wastewater sample as shown in the illustration…

A: A question based on concentration terms. A set of data about Pb in diluted solution is given using…

Q: How many milligrams of strontium carbonate, SrCO3, will dissolve in 4.000 L of deionized water at…

A:

Q: How many grams of xylose (C5H1005) would be in 10 liters of a 2 M solution? Show your work or…

A:

Q: A reaction is made up in the following way: 19 mL of 4.2 M acetone + 11 mL of 1.1 M HCI + 18 mL of…

A:

Q: How many grams of a solution that is 5.2 % sucrose by mass are needed to obtain 18 g of sucrose

A: Mass by volume percentage is the mass of solute particles dissolved per unit of solvent.

Q: During the desorption study, you used 10, 15, and 20 μL of 10% hydrogen chloride.  Determine the…

A: Given: Volume of solutions used are 10 μL, 15 μL and 20 μL. And the %(m/v) of the HCl in solution =…

Q: A biochemist carefully measures the molarity of salt in  23.5mL  of photobacterium cell growth…

A: Given: Molarity = M1 = 7.73 mM Volume = V1= 23.5 mL Molarity = M2 = ? Volume = V2 = 4.78 mL

Q: A student creates a calibration plot for serial dilutions of Cu(NO3)2. A graph of concentration in M…

A: (a) y = 0.345x -0.11 Absorbance = y = 0.655 0.655 = 0.345x -0.11 x = 2.22 M   (b) Molarity = Mass %…

Q: Flow Chart for the Separation of Salt, Sand, Zinc (& Charcoal) 3. Complete the Flow Chart before you…

A: Here it is given a flow chart for the separation of salt,sand,zinc .Lets see which separation…

Q: Calculate: A) the average molarity of the base. B) the standard deviation of the molarity and the…

A: Reaction between KHP and NaOH      NaOH + HOOC-C6H4-COOK -------------> NaOOC-C6H4-COOK + H2O One…

Q: A biochemist carefully measures the molarity of magnesium ion in 85. mL of cell growth medium to be…

A: From the dilution formula: M1: molarity of a stock solution. V1: volume of stock solution. M2:…

Q: A chemist prepares a solution of zinc nitrate by measuring out 78. umol of zinc nitrate into a 100.…

A: Given: The number of micromoles of zinc nitrate present = 78 μmol The volume of the solution = 100…

Q: Refill the burette with the standardized 0.5 M NaOH solution provided. Record the initial volume of…

A: Moles of NaOH required = Moles of vinegar (acetic acid) neutralized

Q: In order to form Ba(IO3)2, 500 mL of 0.5000 M Ba(NO3)2 was mixed with 500 mL of 0.0500 M NaIO3.…

A: We have to find out the millimoles of NaIO3 are there in the solution

Q: 2) If an unknown Cu*2 solution has an absorbance of .62, a) Find its molarity graphically: A M b)…

A:

Q: You are given a standard with a concentration of 10 ppm. You are to create 5 different samples, all…

A: Concentration of the standard = 10 ppmTotal volume of each sample = 100 mLWe have to solve the…

Q: 2. A stock standard solution of copper (1000.0 ppm) is available. How would you prepare 50.00 mL…

A: Concentration of stock solution(C1) = 1000.0 ppmVolume of stock solution(V1) =?Concentration of…

Q: Elaina performs the copper cycle lab beginning with 10.00 mL10.00 mL of a 0.710 M Cu(NO3)20.710 M…

A: First of all we calculate the mass of copper (II) Nitrate using Molarity formula. Formula for…

Q: The solubility in hexane of organic compound O is measured and found to be 92.8 // at 30. °C.…

A: Solubility of organic compound O in hexane = 92.8 g/LMass of organic compound O = 31.0 gVolume of…

Q: tudent needs 25.0 mL of 9.60x10 e No. 6 stock solution to work with, how much of the 2.00 mM…

A: Formula used  M1V1 = M2V2  where M= Molarity and V= volume

Q: A biochemist carefully measures the molarity of ammonium chloride in 75.3 mL of photobacterium cell…

A: Given  M1 = 44.0 μM V1 = 75.3 mL M2 = ? μM V2 = 5.13 mL

Q: A biochemist carefully measures the molarity of calcium carbonate in 66. mL of photobacterium cell…

A:

Q: Elaina performs the copper cycle lab beginning with 10.00 mL10.00 mL of a 1.57 M Cu(NO3)21.57 M…

A: The theoretical yield of copper in grams is calculated as,

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…

A: Mass of metal = 5.000 g Volume of acid = 20.000 mL density of acid = 1.840 g/mL Calculation of mass…

Q: A patient is supposed to be taking 40 mEq of potassium daily in the form of potassium chloride…

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: A student needs 50.0 mL of 5.74×10 -4 M FD&C Blue Dye No. 1 solution. If the student has 2.00 mM…

A: Given: Concentration of stock solution = 2.00 mM = 0.002 M                       (Since 1 M = 1000…

Q: The absorbance of a 0.00004 M potassium thiocyanate solution, (KSCN), is measured as 0.632  in a…

A:

Q: Part B (Trial #1) Part C (Trial #2) Mass of empty evaporation dish 154.48 g 158.34 g Volume of…

A:

Q: - с www-awu.aleks.com = O CHEMICAL REACTIONS Using molarity to find solute mass and solution volume…

A:

Q: When a Vitamin C (ascorbic acid; MM = 176.12 g mol-1) tablet is crushed, dissolved and titrated with…

A: The number of moles of I2 is used to get the endpoint of the titration is determined as follows.…

Q: Starting from the primary standard solution in Question 4 and using the dilution scheme in Figure 1,…

A: The amount of solute that is dissolved in a specified volume of a solvent yields a solution. The…

Q: A student prepares a 0.28 mM aqueous solution of acetic acid (CH,CO,H). Calculate the fraction of…

A:

Q: A student prepares a 1.2mM aqueous solution of crotonic acid C3H5CO2H. Calculate the fraction of…

A: Here we are required to find the fraction of crotonic acid dissociated.

Q: An analytical chemist weighs out 0.066 g of an unknown monoprotic acid into a 250 mL volumetric…

A:

Q: ||| O CHEMICAL REACTIONS Dilution X pouring out some 1.94 S mol L A chemist must prepare 500. mL of…

A: We will solve this question using molarity equation.

Q: Which of the following glassware is best used for slow dispensing of 47.00 mL of a solution?

A: Volumetric pipette are the most accurate apparatus for dispensing a liquid. Because here the error…

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…

Q: In this experiment you will use a 3.0 x 10–5 M stock solution of red dye.  3.0 x 10–5 M means that…

A: we have to calculate the moles of dye molecules in 2.0 mL of the 3.0 x 10–5 M stock solution

Q: A student prepares a 3.4M aqueous solution of propionic acid (C₂H₂CO₂H). Calculate the fraction of…

A: Concentration of propionic acid = 3.4 M