a student decides to make several stock solutions of cobalt(ll) nitrate. What mass of cobalt(ll) nitrate will be required to make 250.0mL of a 0.200M solution ?

Q: How many grams of NaCl are needed to prepare 13.2 mL of a 0.58 M NaCI (aq) solution?

A: We have to calculate the mass of NaCl needed to prepare the given quantity of solution.

Q: How many grams of iron(II) acetate are in 19.89 g of a 2.49 % by mass iron(III) acetate solution?

A: Given data :  Mass of iron acetate = 19.89 g  Mass percent =2.49%  Formula used :  Mass percent =…

Q: How many grams of beryllium chloride are needed to make 154ml of a 0.46 M solution? Round to the…

A:

Q: How many grams of sulfuric acid, H2SO4 are needed to make 250 mL of a 1.22M solution?

A: Given,Volume of H2SO4 solution = 250 mL = 0.250 L     (1mL = 0.001 L)Molarity of H2SO4 solution =…

Q: How many grams of CuSO4 are needed to prepare 250. mL of a 0.200 M solution?

A:

Q: How many moles of HCl are in52.3 mL of a 1.17 M HCl solution?

A:

Q: What volume (mL) of a concentrated solution of sodium hydroxide (4.00 M) must be diluted to 250.0 mL…

A: We know that : V1S1 = V2S2  Or, V1 = V2S2/S1 . ...(1) Here, V2 = final volume = 250 mL, S2 = final…

Q: How many grams of aluminum chloride are needed to prepare 553 mL of a 0.61 M solution?

A:

Q: How many grams of sodium hydroxide are required to prepare 750 mL of a 5.0% solution? We'll assume…

A: In percent solutions, the amount (weight or volume) of a solute is expressed as a percentage of the…

Q: How many grams of 10 % aqueous solution of HCL is needed to prepare 500 mL of the solution?

A:

Q: How many grams Na2WO4 (sodium tungstate) should be weighed out to prepare 500 mL of a 0.200 M…

A: By using the formula of Molarity we can solve this problem.

Q: How many grams of solute are needed to make 450. mL of 0.350 M sodium carbonate solution?

A:

Q: What mass in grams of solid ammonium sulfate would be required to prepare a 250 mL of 0.925 molar…

A: The Molarity of a solution is defined as no of moles of solute present in 1L of the solution.…

Q: How many grams of calcium chloride are needed to make 382 mL of a 2.54 M solution?

A: We have Molarity as 2.54 M, volume of solution as 382 ml, we have to calculate the mass of CaCl2…

Q: How many grams of aluminum chloride are needed to prepare 539 mL of a 0.85 M solution?

A: Answer:- Firstly from the given molarity and the volume of the solution, moles are calculated. Then…

Q: How many grams of NaCl are needed to prepare 17.3 mL of a 0.46 M NaCI (aq) solution?

A: Given that:  Molarity of NaCl = 0.46M Volume = 17.3ml = 17.3ml×1L/1000ml = 0.0173L  We know, molar…

Q: How many ml of water must be added to 60 ml of a 5 M solution to make it 2.5 M?

A: Given  Initial Volume of solution ( V1 )= 60 ml  Molarity of solution ( M1 )  = 5 M .or 5 mole/Liter…

Q: What is the molarity of an aqueous solution prepared by adding 36.4g of barium chloride (208.23…

A:

Q: What is the molarity of an aqueous solution prepared by adding 36.5g of barium chloride (208.23…

A: Number of moles of barium chloride in solution = given mass / molar mass = 36.5 g / 208.23 g/mol =…

Q: Copper (II) bromide is used as a wood preservative. What mass of CuBr2 is needed to prepare 609 mL…

A: Given :- molar concentration of CuBr2 solution = 1.32 M  Volume of solution = 609 mL  To calculate…

Q: If 11.5 mL of stock hydrofluoric acid are diluted to 500.0 mL, what is the molar concentration of…

A: A stock solution is a concentrated solution prepared and stored in laboratories, that can be later…

Q: How many grams of potassium hydroxide would you use to prepare 2500 mL of a 1.40 M solution?

A: Introduction: Molarity (M): It is the amount the moles of a solute per liters of a solution.…

Q: If I need 166mL of 1 Molar solution of KBr how many milliliters of solution must I take from a 9M…

A:

Q: How many grams of NaCl are required to make 400.0 mL of a 1.825 M solution?

A:

Q: 2. The volume of a 2.25 M solution of sodium permanganate that coins 4.00 moles of solute would be

A: Molarity is a concentration term which is defined as the number of moles of solutes dissolved per…

Q: How many grams of sodium chloride (NaCl, 58.44 g/mol) are needed to make up 250. mL of a solution…

A: The molarity of a given solution is defined as the number of moles of the solute present in per…

Q: A solution of nitric acid has a density of 1.400 g/mL and is 13.250 M. Calculate the percent HNO3 by…

A:

Q: a student prepared a solution by adding 16.75 ml of ethanol (C2H5OH) to obtain a final solution of…

A: Ratio of volume of the solute to the volume of the solution multiply by 100 is known as the…

Q: How many moles of NaCl are required to make 250 mL of a 3.00 M solution?

A: The given information are recorded as shown below,

Q: A solution is 20% m/v. What is the mass of dissolved solid in 150 ml of the solution?

A: Given: %(m/v) of solution = 20 % And volume of solution = 150 mL

Q: How many grams of solid potassium chloride KCl are needed to prepare 250 ml of a 1.50 M solution?

A: Applying molarity equation M =m/VL

Q: You are asked to make 500. mL of a 0.250 M sodium chloride (NaCl) solution. a. How many moles of…

A: The formula for molarity is, moles = molarity×volume/1000 The given molarity of NaCl is 0.250 M.…

Q: An aqueous solution is 40.0% by mass hydroch

A: Molality is used for calculation of concentration like molarity but in molality it is the number of…

Q: How much concentrated hydrochloric acid solution (36.0%% HCl by mass, dd = 1.18g/mL), in…

A: First from given molarity and volume the moles of HCl present is calculated.

Q: How many grams of sodium hydroxide are needed to make 250 mL of a 0.200 M solution?

A: Molarity = mole/ volume  Mole = mass/ molar mass

Q: How many grams of sodium hydroxide are needed to make 735.67 mL of 17 M solution?

A: Given :-  molarity of NaOH solution = 17 M or 17 mol/L  volume of solution = 735.67 mL  To calculate…

Q: How many grams of solid potassium chlorate (KClO3, 122.55 g/mol) are needed to make 150 mL of 0.50 M…

A: Given data, Molarity = 0.50 M Volume = 150 mL (0.15L) Molar mass of potassium chlorate = 122.55…

Q: How many moles of NaOH are present in 25.00 mL of 0.500 M NaOH solution?

A: Given, the volume of solution =25.00 mL= 0.025 Lconcentration of NaOH solution =0.500 Mwe are asked…

Q: An experiment in a general chemistry laboratory calls for a 2.00-M solution of HCl. How many mL of…

A: This problem is related to the preparation of dilute solution from the given stock solution.…

Q: How many grams of KMnO4 are needed to make 289.0 mL of 0.758 M solution?

A: 1- First we need to determine the moles of KMnO4 in solution : Moles = [ Molarity × Volume ]  Moles…

Q: How many grams of copper sulfate would you need to make 9 L of a 2 M copper sulfate solution (m.w. =…

A: Molarity is defined as the moles of solute per litre of solution. Hence, 2M solution means we need 2…

Q: Calculate the mass of NaCl ina 45 mL sample of a 1.8 M NaCl solution.

A: Stoichiometry is mainly based on the calculation of moles and volumes. These two values are used to…

Q: Describe how you would prepare 250 ml (total volume) of a solution that is 0.25% phenolphthalein by…

A: 0.25% by mass means 0.25 g phenolphthalein is present in 100 g of solution. Or , in other words,…

Q: A solution of heparin sodium, an anticoagulant for blood, contains 1.8 g of heparin sodium dissolved…

A: Mass/volume percent concentration is one of the quantity used to express concentration. Formula for…

Q: How many grams of lead(II) nitrate, Pb(NO3)2, are needed to prepare 750. mL of 0.785 M solution?

A: Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are…

Q: How many grams of NaCl are needed to prepare 4.36 liters of a 1.601 M solution?

A: Molecular wt of NaCl is 58.44 g /mol  1molar NaCl solution means 1 mole NaCl present in 1 liter of…

Q: How many grams of sodium nitrate are needed to prepare 1.85 liters of a 0.995 M sodium nitrate…

A: Moles of a particular compound can be determined by calculating the product of the molarity and the…

Q: What mass of solid would you need to make 100.0 ml of 0.420 M potassium sulfite solution?

A: Since molarity = moles of solute / volume of solution in L volume of solution in L = volume of…

Q: How many milligrams of sulfuric acid (H2SO4) are in a 50 mL solution of 1.9 M H2SO4?

A: A numerical problem based on quantitative analysis, which is to be accomplished.

Q: How many grams of copper(II)sulfate will you mix with 450 mL of water to prepare 2.50% by mass of…

A: The mass percent of copper (II) sulfate can be expressed as follows: Mass% of CuSO4  =  Mass of…