How many millilitres(ml) of a 1o00 ppm solution of CaC12 prepare from 3 mg ? 9 ml O 6 ml O 3 ml O 1ml

Q: 4. How many grams of MgCl2 is dissolved in enough water to prepare 1500 mL of solution containing…

A:

Q: How many grams of CaC2O4 would be required to make a saturated aqueous solution in a 1 Liter flask…

A: solubility is defined as the maximum amount of solute that can be dissolve in a solvent or we can…

Q: What mass of solute (in g) is contained in 425 g of a 3.5 % m/m solution? O 15 g O 8.2 x 10-5 g…

A: % m/m is defined as % m/m = mass of solute X 100 / mass of solution

Q: How many grams of Na2CO3

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Q: A 12.5 % by mass solution of ethanol (C2H5OH) in water has a density of 1.225 g/mL at 20°C. What is…

A:

Q: What mass in grams (g) of dextrose is required to prepare 4.256 L of D51/4NS solution?

A: Given-  4.256 L of D51/4NS solution Calculate - mass of dextrose required= ?

Q: How many grams of Na2S2O3 are needed to prepare 87.0 mL of a 5.00 %(m/v) Na2S2O3 solution?

A: The (m/v) concentration of a solution is calculated by using the following equation: m/v…

Q: How many grams of benzoic acid (C6H5COOH) are contained in a 75.0 mL solution at 0.340 M…

A: First determine the moles of benzoic acid in given solution.

Q: The gas, carbon dioxide, is found in dry air at sea level at a concentration of 330. ppm. At a…

A: Given: concentration of CO2 = 330 ppm molecules of dry air = 2.51*1013 million molecules per cm3

Q: How many grams of Na2S2O3 are needed to prepare 87.0 mL of a 5.00 %(m/v) Na2S2O3solution?

A: Percentage mass by volume is defined as moles of solute per 100 mL of the solution and it can be…

Q: What are the NaCl mass percent, ppm and ppb levels in a solution that is prepared by dissolving 0.30…

A: Here we have to determine mass percentage, ppm and ppb of 0.3mg NaCl dissolved in 1L water.

Q: What mass (in grams) of Mg(N03)2 is present in 145 mL of a 0.150 M solution of Mg(NO3)2 (At wt Mg…

A: Since, Moles of Mg(NO3)2  Present = molarity of solution X Volume of solution in L Molarity of…

Q: Express as % solution: 1. 80 mg of urea in 0.45 L of water 2. 8 mg/dL saline

A: 1) Given : 80 mg of urea in 0.45 L of water. Assuming volume of solution = volume of water = 0.450 L…

Q: Which aqueous solution will freeze at -0.837°C?     0.15 m Mg(NO3)2   1.5 m MgSO4   0.25 m NaCl…

A:

Q: A concentrated phosphoric acid solution is 85.5%H 3 PO 4 by mass and has a density of 1.69g / m * L…

A:

Q: Calculate the mass percent (m/m) of 25.0 g KCl dissolved in 125 g of water?

A: Mathematically,Mass percentage of an substance is equal to the ratio of mass of given substance to…

Q: HW 8 #20

A: Mixing is the process when we mix two different molecules. Since here initially and finally we have…

Q: How many liters of a 0.550 M sucrose (C12H22O11C12H22O11) solution contains 1.7 kg of sucrose?

A: To solve this problem the required formula is  M = n/ v  where M = mass  n = number of moles  v =…

Q: What is the volume of the 15% NaI solution requires to prepare 100mls of a 7.5% NaI

A: Concentration of initial NaI (C1) =Volume of initial NaI (V1) = ?Concentration of final NaI (C2) =…

Q: How many grams of H2SO4 are needed to prepare 952 g of a 14 % (m/m) H2SO4 solution?

A: Please have a look on the solution below:

Q: What are the mole fraction and the mass % of a solution made by dissolving 0.50 g KI in 0.500 L of…

A: Mass of KI = 0.50 g Volume of water = 0.500 L                              = 0.500 × 1000 mL…

Q: What is the molar concentration of a 15% glycerol solution? Chemical formula glycerol: C3H8O3 MWs:…

A:

Q: What is the concentration in parts per million of a solution in which 25.0 mg of potassium chloride…

A: Parts per million is a measure of concentration of a substance. It is used when the amount of…

Q: 8. Which of the following would increase the amount of ammonia dissolved in water? Refer to the…

A: The dissolving power of ammonia into water gives rise to a basic solution. A limited quantity of…

Q: Calculate the osmolarity of a 1.15% (m/v) KBr solution. concentration: osmol/L

A:

Q: How many grams of Na2CO3 are needed to prepare 11.6 mL of a 1.27%(m/v) Na2CO3 solution?

A:

Q: What’s the osmolarity of 1.2 M K3PO4 solution ?

A: Osmolarity can be defined as the number of solute particles present in the solution, which may be…

Q: How many grams of Mg(OH)2 is necessary to prepare 500mL of 0.5M Mg (OH)2 solution? FW of Mg(OH)2 =58…

A: Given,  Volume of solution = 500 mL = 500 mL × ( 1 L / 1000 mL ) = 0.500 L  molarity of Mg(OH)2 =…

Q: 47.5 mL of ethyl alcohol in 236.9 mL

A: The v/v % (volume by volume percentage) concentration of ethyl alcohol is 20.0 %

Q: How many grams of Na2CO3 are needed to prepare 48.8 mL of a 1.31%(m/v) Na2CO3 solution?

A: There are several ways of determining the concentration of a solute in a solution such as: Mass…

Q: What is the mass percent of glucose (C6H12O6, 180.2 g/mol) in a 2.60 M aqueous solution of glucose…

A:

Q: How many grams of NaBr are needed to prepare 27.5 g of 7.46% (w/w) NaBr solution in water? How many…

A:

Q: H2SO4 comes as an 18.0M solution.  How would you prepare 250.0 mL of a 0.5M solution?

A: The objective of this question is to determine the volume of the 18.0M H2SO4 solution needed to…

Q: What is the molality O 2.75 x 10-6 m O 3.35 x 10-7 m O 8.45 x 10-6 m O 1.75 x 10-7 m O 6.23 x 10-6 m

A:

Q: How many grams of glucose, C6H1206, are needed to make 5.00 L of 5.0O M solution? H=1.007 O=16 C=12

A: to make 5M solution we need 5 moles per litre total moles required in 5 litres= 25 moles

Q: How many grams of NaNO3must be combined with water to prepare 250.0 mL of a 0.75 % (m/v) solution?

A: Volume of solution = 250 mL  Concentration (m/v)% = 0.75%  Here, concentration term is m/v%   m/v% =…

Q: 33.5 mL of glycerol (C3H8O3) in 250.0 mL of aqueous solution (density of glycerol = 1.265 g/ml):

A: To solve this problem, we need to find the mass of glycerol and its concentration in the aqueous…

Q: How many grams of Na2S2O3 are needed to prepare 87.0 mL of a 5.00 %(m/v) Na2S2O3solution?

A:

Q: What is the percentage of procaine HCI which will yield an isotonic solution with blood plasma? FD1%…

A: Applying for general formula           0.52-a/b

Q: What is the concentration of argon (in units of grams per liter) dissolved in water at 25°C, when…

A: Given,partial pressure of the Ar gas over the solution = 519 mmHgk for Ar at 25 oC = 1.40 x 10-3…

Q: How many grams of potassium dichromate (K>Cr207) are required to prepare a 500-mL solution ~ whose…

A: Given, Volume = 500 mL = 0.5 L Molarity = 5.00 M. To calculate the mass in grams.

Q: A 4.5 mL gas bubble is exhaled by a diver at a depth where the pressure is 3.30 atm and the…

A: Given that,  Volume of gas bubble V1 = 4.5 mL Pressure P1 = 3.30 atm Temperature of gas bubble T1=…

Q: What is the molarity of an aqueous solution that contains 0.072 g C₂H₆O₂ per gram of solution. The…

A: The number of moles for a given chemical species refers to the ratio of mass of the species to that…

Q: How would you prepare the following solution: 750 mL of 0.5 M H2SO4 from dilute H2SO4 (3 M…

A: In such questions amount of solute i.e H2SO4 must be same.  Let volume of 3 M H2SO4 solution = V ml