If you have a stock solution of Janus Green B dye that is at a concentration of 1 gram/liter, what is the amount that you would have to remove from the stock solution and mix with distilled H2O to make 50 milliliters of a Janus Green B solution at  100 mg/L 1 mg/ml 250 µg/ml 100 ng/ml 100 pg/ml

Q: a soultion has a concentration of 6.00 and contains 1.45g of HNO3. What is the voulume of this…

A: Given Concentration = 6 mol/L mass = 1.45 g

Q: helpp asap!! An aqueous solution of hydrofluoric acid is 16.7% HF, by mass, and has a density of…

A:

Q: O Calculate the number of milliliters of 0.686 M Ba(OH)2 required to precipitate all of the Cu²+…

A: a) given, CuI2(aq) + Ba(OH)2 -----> Cu(OH)2(s) + BaI2(aq) For Ba(OH)2 solution: Concentration of…

Q: How many milliliters of 0.20 MHCI are needed to completely neutralize 65 mL of 0.20 M NaOH solution?…

A: Using the formula Milliequivalent of acid = milliequivalent of base Macid Vacid = Mbase Vbase 0.20…

Q: The volume of 0.16M NaOH needed to react with 40 mL of 0.12M H2SO4 is     30 mL     40 mL…

A: Given Molarity of H2SO4 = 0.12 M Volume of H2SO4 = 40 ml = 0.04 L Molarity of NaOH = 0.16 M

Q: 2. Athletes need to hydrate with electrolytes (and not pure water). If they do hydrate using pure…

A: Athletes engaging in intense physical activities often face the challenge of maintaining adequate…

Q: calculate the molarity (in mol/L) of a solution created by dissolving 0.40 g of sodium acetate…

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Q: What volume (in mL) of concentrated hydrochloric acid is necessary to prepare 6 mL of 50% (v/v)…

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Q: How many mL of 0.265 M H3PO4 would be required to neutralize 64.3 mL of a 0.250 M Ba(OH)2?

A: To neutralize the reaction we required 42.8 mL of H3PO4.

Q: None

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Q: Assume that a water sample tested has 150 mg/L total hardness. The Mg hardness is 50 mg/L,Ca…

A: Total Hardness = Hardness due to Magnesium + Hardness due to Calcium OR Total Hardness = Temporary…

Q: How many milliliters of 0.20 M HCI are needed to completely neutralize 65 mL of 0.20 M NaOH…

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Q: You need to make a large quantity of a 5% solution ofHCl but have only 25 mL HCl. What volume of…

A: The solution is a mixture in which the lowest amount (solute) is dissolved or distributed in a high…

Q: 5. (optional) A student diluted 15.0 mL of 6 M NaOH solution into 485.0 mL of distilled water.…

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Q: A typical concentration of chloride ion in blood plasma is110 meq/L. Represent this concentration in…

A: meq is Milliequivalent. It indicates the chemical activity or combing power of an element relative…

Q: If I start with a 2M stock solution (my concentrate) and I need 200ml of a 0.8M solution how much of…

A: Given that  concentration of stock solution =2 M concentration of diluted solution =0.8 Mvolume of…

Q: How do you prepare a 5 meq/ml silver nitrate solution in water and a 4 meq/ml NaCl solution in…

A: It is given that we are having, 5 meq ml-1 silver nitrate solution in water 4 meq ml-1 NaCl…

Q: A lake water sample was analyzed. During analysis of dissolved oxygen using Winkler's method,…

A: To survive aquatic life they need oxygen. The source of oxygen for aquatic life is dissolve oxygen.

Q: A Ringer’s solution contains the following concentrations of cations: 145 mEq/LmEq/L of Na+Na+, 3…

A: Since in any solution, the overall charge of cations will be equal to the overall charge of anions…

Q: Consider the following reaction: 2 CN- + 5 ClO- + H2O --> N2 + 2 HCO3- + 5 Cl- How many Liters of…

A: Given, 2 CN- + 5 ClO- + H2O --> N2 + 2 HCO3- + 5 Cl-

Q: 5. How many grams of CaCL2 (MM = 110 g/mol) should be dissolved in H20 to prepare a liter of 1.2M…

A: Molarity means moles of solute dissolved in a litre of solution.

Q: None

A: Part 1: Answer: You will need 0.4887 mg of brassic acid and 1.2416 mg of ethylene glycol. Part 2:…

Q: Determine the values of reaction orders, m, and n.

A: The order of the reaction in clock reaction always depends on the concentration of thiosulfate…

Q: 1- You need 0.750L of a 0.33M HCl solution. If you add 89.5mL of HCl, what was the concentration of…

A: Answer:solution is homogeneous mixture of two or more than two substances. The substance that is…

Q: Question 13 of 27 O Macmillan Learning Lead(II) nitrate and ammonium iodide react to form lead(II)…

A: The balanced chemical equation for the reaction is given as Pb(NO3)2(aq) + 2 NH4I(aq) → PbI2(s) + 2…

Q: An alcoholic drink contains methanol (CH3OH; density of 0.792 g/mL), in which at high dosage, is…

A: Given that, an alcoholic drink contains methanol (CH3OH: density of 0.792 g/mL), in which at high…

Q: make 1.0 L of 0.50 M HCl solution?   Question 10 options:   12 mL   3.0 mL   300 mL   83 mL…

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Q: convert the concentration of .700 M Na2SO4 to g/ML

A: The concentration of Na2SO4 is given 0.7 M = 0.7 mol/L

Q: 25. The concentration of 4.0 litres of H2sO4 needed to repare 5.0 litres of 2.0 M solution is? A…

A: Given  V1= 4 litres              V2 = 5 litres               M2= 2 M                Find out M1…

Q: If a NaCl solution contains 12 mEq of NaCl in each teaspoonful, how many milliliters will provide 9…

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Q: Use the balanced equation below to answer the following question. How many milliliters of 0.300M HCl…

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Q: What is the molarity of lons fincluding both cations and anions) in a 2 M N2CI solution? 06M 02M 04M

A: Given : Molarity of NaCl solution = 2 M

Q: A teacher has a bottle of 6.0M hydrochloric acid. She wants to make 3.0 L of 3.0 M HCI for her…

A: Note : As per our guidelines We are supposed to first question kindly resubmit the other question as…

Q: How many mL of a 15 M HCI(ag) stock solution would a teacher need in order to prepare 100mL of a 3M…

A: Given information: Concentration of HCl = 15 M New concentration of HCl = 3 M New volume of HCl…

Q: Compare the two quantities based on the given condition: Solution X: 10 mL containing 0.10 M NaCl…

A: Solution X contains 10 mL 0.1 M NaCl and 0.1 M NaNO3 Na ions in X = 1 mmol from NaCl and 1 mmol from…

Q: 12. The Environmental Protection Agency limit for nitrates in drinking water samples is 10.0 ppm…

A: Given: Concentration of nitrates in drinking water (EPA Standard) = 10 ppm Concentration of nitrates…

Q: Calculate the millinoles of HNO3 in 2.4ml of 8.0 M HNO3

A: Given, The molarity of the HNO3 = 8.0 M = 8.0 mole/L The volume of the HNO3 = 2.4 ml The moles of…

Q: 10g of sodium nitrate is dissolved in a 90 ml of H2O (density of H2O=

A: Given,   Mass of Sodium nitrate(NaNO3)=10 g Molar mass(MM) of NaNO3 = 85g Moles of NaNO3 = mass/MM…

Q: How many mL of 0.451 M HCl are needed to dissolve 6.44 g of BaCO3? 2HCl(aq) + BaCO3(s)  BaCl2(aq) +…

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Q: Answer the following:  Determine the percentage of acetylsalicylic acid present in the aspirin…

A: Mass of aspirin tablet = 73.82 g  Molar mass of acetyl salicylic acid = 180.158 g/mol  Molarity of…

Q: None

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Q: A 15% w/v (NH4)2SO4 standard is needed. How much solute would be needed to make 50 ml?

A: Percent mass by volume is defined as the mass of solute(in gram) divided by the volume of solution(…

Q: When 0.064L of a solution containing 1.46M BaF2 is diluted to 0.7L, what is the concentration of…

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