A student dissolved 4.00 g of Co(NO3)2 in enough water to make 100. mL of stock solution. He took 4.00 mL of the stock solution and then diluted it with water to give 275. mL of a final solution. How many grams of NO3- ion are there in the final solution? _____ g

Q: Mass of beaker 50.5g Mass of marble before reaction 3.0g Mass of marble after reaction…

A: Formula of marble CaCO3 Chemical reaction CaCO3 (s)  + 2 HCl (aq) →CaCl2 (aq) + CO2 (g) + H2O (l)…

Q: 6. A 25.00 mL aliquot of concentrated hydrochloric acid (11.7 M) is added to 175.00 ml of 3.25 M…

A: No of moles of HCl in aliquot = Molarity x Volume in L…

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A: Molarity of a given solution is calculated by dividing the number of moles of solute present in it…

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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

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A: Dilution :-  If a solution of molarity M1 and volume V1 is diluted by adding water to a solution of…

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A: Molar mass of unknown monoprotic acid as shown below

Q: How many grams of cobalt (II) nitrate would you need to add to a 100.0 mL volumetric flask to make a…

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Q: Mass of Erlenmeyer flask: 25.52 g Mass of Erlenmeyer Flask + Calcium Hydroxide Solution (lime…

A: Mass of Ca(OH) 2 = 2.92 g Density of Ca(OH) 2= 1 g/ml As we know        Density = mass/ volume We…

Q: A 650 mL sodium bromide solution has a bromide ion concentration of 0.245 M. What is the mass (g) of…

A: Molarity is equal to the number of mole of solute that dissolved in per liter of solution. Its SI…

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Q: An analytical chemist weighs out 0.133 g of an unknown diprotic acid into a 250 mL volumetric flask…

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Q: You have 150.0 mL of a 0.821 M solution of Ce(NO3)² What mass (in grams) of Ce(NO₂), would be…

A: Mass of Ce(NO3)4 can be calculated by knowing the concentration and volume of solution.

Q: 5 A,B,C,D

A:

Q: n the laboratory, a student dilutes 19.3 mL of a 9.21 M hydrobromic acid solution to a total volume…

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A: Concentration of aspirin is expressed in term of molarity. Molarity is the number of moles of solute…

Q: 1.) If you have 0.200 mol of a compound in a 0.775 M solution, what is the volume (in L) of the…

A: Molarity  is the ratio of number  of  moles of solute by total  volume of  the solution.  Number  of…

Q: An analytical chemist weighs out 0.461 g of an unknown triprotic acid into a 250 mL volumetric flask…

A: The molar mass of an unknown acid is to be calculated from the given data. Given: Mass of unknown…

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A: We know that,   Molarity = no. of moles of solute/volume of…

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A:

Q: (a) How many milliliters of a stock solution of 13.0 M HNO3 would you have to use to prepare 0.500 L…

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Q: A student removes 25 mL of 3.0 M NaOH and dilutes it to final volume of 350 mL. What is the…

A: Given,  Initial volume, V1 = 25 ml  Initial concentration, S1 = 3.0 M  Final Volume, V2 = 350 ml…

Q: If you dilute 218 ml of a 2.4 M solution of LICI to 2.3 L , Determine the new concentration of the…

A: Molarity is defined as total number of solute present in 1000 ml of solution . For dilution we will…

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A: We define Molarity is defined as moles of solute upon the volume in litre

Q: A student dissolved 4.52 g of Mg(NO3)2(s) in enough water to make 400 mL of solution. What is the…

A: Given: Mass of Magnesium nitrate = 4.52g Volume of Solution = 400mL

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A: The question is based on the concept of solutions. we have been given a stock solution and we have…

Q: Consider this UNBALANCED chemical reaction:   NaOH (aq)   +   FeCl3   →    NaCl (aq)   +…

A: To solve this first we have to balanced the chemical equation  3NaOH (aq)   +   FeCl3 (aq)    →   3…

Q: A student prepared a stock solution by dissolving 10.0 g of KOH in enough water to make 150. mL of…

A: We have to determine  concentration  of  final solution of KOH.

Q: btA. How many grams of NaCl should you weigh to make 2.00 L of a 6.14 M solution of NaCl? B. What…

A: Given,  The mass ingrams of NaCl should you weigh to make 2.00 L of a 6.14 M solution of NaCl is:

Q: A solution is prepared by combining 8 g of sodium hydroxide (NaHO) with 245 g of H2O and the…

A: The mass of solute sodium hydroxide is 8 g and it dissolves in 245 g of water and the mass of the…

Q: 5.7418 g of iron III nitrate (Fe(NO3)3), MW = 241.9 g/mol), a soluble ionic compound, is dissolved…

A: Given, Mass of iron (III) nitrate [Fe(NO3)3] = 5.7418 g Molecular Weight of iron (III) nitrate…

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Q: What laboratory equipment do you need to prepare 250 mL of a 0.010 M solution of NaCl from a stock…

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Q: Magnesium metal reacts with hydrochloric acid to form aqueous magnesium chloride and hydrogen gas.…

A: The number of moles is equal to the ratio of mass to the molar mass of the substance. It is denoted…

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Q: 5. A solution of barium hydroxide, Ba(OH)2, contains 4.285 g of barium hydroxide in 100.0 mL of…

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Q: A student needs to make 250 mL of 1.4 M Fe(NO3)3 by dilution. How many milliliters of a 5.0 M…

A: Given data :  Initial molarity of Fe(NO3)3 (M1) is 5.0 M Final volume of Fe(NO3)3 (V2) is 250 mL.…

Q: Consider a rxn in which Mg metal reacts with Hcl to form aqueous magnesium chloride and hydrogen…

A: We have to calculate the mass of hydrogen gas produced .

Q: 0.22g of calcium chloride (110.98 g/mol) is dissolved into 50mL of water. It is labeled "Solution…

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Q: An analytical chemist weighs out 0.050 g of an unknown triprotic acid into a 250 mL volumetric flask…

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Q: A chemist adds 315.0mL of a 0.00335μM copper(II) fluoride CuF2 solution to a reaction flask.…

A: Moles can be found out by multiplying volume with molarity.

Q: Na2CO3(aq) + CaCl2(aq) – → 2 NaCl(aq) + CaCO3(s) Calculate the volume (in mL) of 0.100 M Na,CO3…

A: The balanced reaction taking place is given as, Given: Mass of CaCO3 produced = 1.00 g. And the…

Q: You are making 750 mL of a 0.7 M Ca(OH)2 solution.  How many moles of Ca(OH)2 will be added?  How…

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Q: In the laboratory you dissolve 15.8 g of nickel(II) bromide in a volumetric flask and add water to a…

A: Answer:- This question is answered by using the simple concept of calculation of molarity of the…

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Q: What mass in grams of KCI is there in 115 mL of a 2.50 M KCI solution? (5 points) What volume, in mL…

A: Given, molarity of KCl solution = 2.50 M volume of KCl solution = 115 mL = 115 mL × (1 L / 1000 mL)…

Q: 3. What would be the molarity of a solution made by dissolving 4.50 grams of potassium sunate to…

A: As per our guidelines we can only solve first three sub-parts. Please resubmit the other questions…

Q: What volume (in mL) of a solution that is 0.0191 M in mercury (I) oxide (Hg2O) contains a mass of…

A: Given :-  Molarity of Hg2O solution = 0.0191 M or 0.0191 mol/L  Mass of Hg2O = 2.27 g  To calculate…