You have a concentrated stock solution of 5 M NaOH and want to use it to produce a 300 mL solution of 3 M NaOH. What volume of water and stock solutions will you measure out to make this new solution? O a. 200 mL of water, 100 mL of NaOH stock O b. 100 mL of water, 200 mL of NaOH stock O c. 120 mL of water, 180 mL of NaOH stock d. 150 mL of water, 150 mL of NaOH stock

Q: A solution was prepared by dissolving 0.403 g of potassium dichromate, K2Cr2O7 (MM=294.18 g/mol) in…

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Q: A solution is made using 300.0 mL of acetone (density 0.7845 g/mL) and 877.3 mL of water (density…

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Q: 1. A blood serum sample is analyzed and found to contain 102.5 µg Ca²*/mL serum. The density of the…

A: 3) Given that: Molarity of Cr3+ = 0.125 M Molarity of MnO4- = 0.200 M Volume of MnO4- = 12.00 mL

Q: You have a 3.5 M H3PO4 solution available. Complete the following questions about this solution:…

A: The process by which the concentration of a solution is reduced by adding a suitable amount of…

Q: A 48.0 wt% solution of HBr in water has a density of 1.50 g/mL. (a) How many grams of solution are…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: a solution contains 10mL of ethanol and 40 mL of water the density of ethanol is 0.789 g/mL the…

A: Answer: Molarity of ethanol is 3.43 M

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Q: What volume of a 1.1M solution can be prepared with 100g of magnesium nitrate?

A: In this question, we want to determine the volume of the magnesium nitrate.  How we can determine,…

Q: A solution is made using 300.0 mL of acetone (density 0.7845 g/mL) and 951.3 mL of water (density…

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Q: 5. How many grams of potassium sulfate would be recovered by evaporating 623 mL of 22.5 % potassium…

A: Mass = Volume x density %Mass = 100 x Mass of solute/Mass of solution Number of moles = Molarity x…

Q: A chemist reads a solubility table and finds that 38.0 grams of table salt is the maximum amount of…

A: Solubility :- The maximum amount of solute that can be dissolved in given amount of solvent is…

Q: Question attached

A: Molarity of a solution tells us how many moles of solute we get per litre of solution. Molarity…

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A: It is given that  3% (weight/volume)HCl is made in ethanol solution =3 gm per 100 ml solution…

Q: Silver nitrate solution is used in various hair dyes and permanent fabric markers. Water is added…

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Q: “Concentrated” hydrochloric acid is an aqueous solution of 37.2% HCl that is commonly used as a…

A: 37.2 % HCl means that 37.2 g of HCl is present in 100 g of solution.

Q: An experiment calls for 225 mL of 0.330 MNaCl solution. What mass of NaCl is required? Mass What…

A: Given - Molarity of NaCl solution = 0.330 M Volume of solution = 225 mL = 0.225 L a) First determine…

Q: Please report your answer in mL  to 3 decimal places. No units please.

A: The molarity is used to define concentration which is determine as the number of moles of solute…

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

Q: density of water= 1 g/ml   volume of water = 12ml   mass of water= ?  mass of solute = 1g…

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Q: Calculate the percent mass per volume, % (m/v), of a dextrose solution containing 7.00 g of dextrose…

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Q: 35. How many grams of ammonium chloride (molar mass = 53.5g/mol) are contained in 0.500 L of a 2.00…

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Q: 1. A blood serum sample is analyzed and found to contain 102.5 µg Ca*/mL serum. The density of the…

A: 1. Here we will calculate concentration of Ca2+ with different unit. The density of the serum is…

Q: I have 6 tubes with the contents labeled. How can I make a 20% concentration serial dilution? Please…

A: Serial dilution: A serial dilution is any dilution in which the concentration decreases by the same…

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: This lab used 6 M HCl that was diluted from a higher concentration.  If your lab instructor asked…

A: • Concentration (C) = No. of molesVolume• No. of moles = Concentration (C) x Volume (V)# If dilution…

Q: calculate the mass percent of your solution. show your calculations

A: Mass percent is the physical quantity used to define the concentration of the species Mass percent…

Q: 3.75 dm3 of distilled water are added to 250.0 cm3 of 3.20 mol dm–3 sodium hydroxide solution. What…

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Q: 1. A blood serum sample is analyzed and found to contain 102.5 ug Ca2*/mL serum: The density of the…

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Q: Can you actually write this out? It makes it much more difficult to read when it gets written out…

A: The mass of solute in gram present in 100 g solution is known as the mass percent concentration of a…

Q: a. Starting with a 1M stock of NaCl, a researcher prepares a 100 mM working solution. The dilution…

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Q: What is the concentration of a NaCl solution made from taking 22.64 mL of a 12.67M NaCl solution and…

A: Given information: Initial volume (V1) = 22.64 mL Final volume (V2) = 1.25 L Initial concentration…

Q: 8.5 mL of a sample of sea water solution was added to a 44.317 g evaporating dish. The combination…

A: a. The given mass of dish = 44.317 g The weight of solution = 52.987- 44.317 = 8.67 g

Q: 240 220 200 NaCIO3 180 4KNO3 160 140 KBr 120 100 NaCI 20 40 100 120 Temperature (°C) Solubility…

A: Solubility is defined as the amount of a substance dissolved per 100 g of a solvent at a particular…

Q: How would you prepare 350 mL of a 1:20 glucose solution? Write your answer with two digits past the…

A: 1:20 glucose solution means 1/20 dilution factor., Volume of solution = 350 ml Required weight of…

Q: You are given a protein solution with a concentration of 0.15 mg/ml. Suppose that we want to prepare…

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Q: using exactly 5.00 mL of 0.0400 M stock CuSO4 solution. Add 100 mL of water. Data for Part I Mass…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: A dilute aqueous solution containing 1 ppm of solute has a density of 1.00 g/mL. Express the…

A: Concentration is equal to the ratio of the number of moles to the volume of solution. The…

Q: A solution is prepared by dissolving 12.5 g of KBr in 20 mL of water at 60 °C(see Figure 9.3). Is…

A: Solubility of any substance means the mixing of one component into the other component. If the…

Q: A solution is made by combining 4.00 g of sugar and 100 mL of water (density of water = 1.00 g/mL).…

A: %w/w = mass of solute/mass of solution*100

Q: 54. Potassium sulfate has a solubility of 15 g/100 g water ar 40°C. A solution is prepared by adding…

A: Given : solubility of potassium sulfate i.e K2SO4 is 15 g/100 g water  Mass of K2SO4 added = 39.0 g…

Q: 24.71 cm (24.71 m) of this solution is delivered from a buret, what amount of HCI has been…

A: Molarity is defined as the ratio of the number of moles of solute to the volume of solution in…

Q: 1. How many grams of H3PO4 are in 175 mL of a 3.5 M solution of НЗРО4 A 4.9 g B 60. g C 20. g D 0.61…

A: 1. In this part, [H3PO4]=3.5M , Volume = 175ml We have to find out mass in the given amount…

Q: How many grams of glucose must be added to 25.9 g of water to prepare a 16.2% by mass glucose…

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Q: A student must prepare 5.000 L of 0.2500 M Na2CO3 (105.99 g/mol). Which is the best procedure for…

A: Given Volume of solution = 5 LMolarity of solution = 0.25 MMolar Mass of Na2CO3 = 105.99 g/mole

Q: How many gallons of a 3% salt solution must be mixed with a 7% salt solution tô öbtäin 100 ĝallöns…

A: It is given that 3 % solution is mixed with 7% solution to give a 5% solution. Let us assume that we…

Q: What volume of 40% w/w HCI (36.5) density 1.198 m/ml must be diluted with water to obtan excatly 250…

A: To get 250 mL of 1.0 F concentration of HCl we need to calculate stock formula concentration of HCl.

Q: A solution is made using 450.0 mL of isopropanol (density 0.7860 g/mL) and 845.5 mL of water…

A: Mass of isopropanol = density × volume = 0.7860 g/ml × 450.0 ml = 353.7 g Mass of water  = density ×…

Q: molarity of the diluted solution?

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Q: CALCULATIONS Set up each problem completely and SHOW UNITS. Cancel the units when you do the…

A: Given that, Mass of KH2PO4 sample = 0.0900 g = 90 mg Volume of water = 250 mL = 0.25 L 1)…