7a) Calculate the number of grams of hydrogen peroxide contained in 25.0 mL of a 3.60 M solution. 7b) What mass of a 30% (w/w) hydrogen peroxide solution is required to provide the mass calculated in question 7a?  A w/w solution means g solute/100 g solution.

Q: 1. How many grams of Ca (OH)2 do you need to prepare a 250 mL of 0.2M solution. Calculate mol wt. of…

A: Here, we have to calculate the mass of Ca(OH)2 that is needed to prepare a 250 mL of 0.2 M solution…

Q: Determine the percent by mass of MgCl2 if 3.3 g of MgCl2 is dissolved in 46.5 g of water.

A: Given, mass of MgCl2 = 3.3 g Mass of Water = 46.5 g Total mass of Solution = mass of water + mass of…

Q: A sample of 100 Unit/L is diluted 1 in 10, what is the concentration of the final solution?

A: The formula of dilution is  M1V1 = M2V2  Where  M1 and M2 are initial and final concentration V1 and…

Q: The amount of sodium citrate in 60 mL of 22.5% w/v sodium citrate solution is _______ g.

A:

Q: Match the following aqueous solutions with the appropriate letter from the column on the right. 1.…

A: According to guidelines we are supposed to answer one question only if you want rest of questions to…

Q: I want to make 500 mL of HCl solution with MHCl concentration = 0.1 moL/L from HCl solution which…

A: Given that -  Volume of HCl Solution = 500 mL  Concentration of this Solution = 0.1 mol/L = 0.1 M…

Q: 8. A 250.0 mL aqueous solution contains 45.1 pg of a pesticide. Express the pesticide's…

A: we need to calculate the concentration of pesticide

Q: solution. The density of the resulting solution is 1.018 g/mL. Molar mass NaCl is 58.445 g/mol What…

A:

Q: What is the percent-by-mass concentration of NaCl in a solution that is prepared by adding 15.0 g of…

A: Mass percentage is another method applied to depict concentration of given compound in known…

Q: Concentrated" barium hydroxide is an aqueous solution that is 50% by mass and used as a reagent. The…

A: The objective of the question is to find the mass of Ba(OH)2 contained in 2 mL of concentrated…

Q: If 21 mL of 1.0 M NH4Cl is used what volume does it need to be diluted to in order to make a 0.12 M…

A:

Q: 5. Consider a solution composed of toluene (CHs) and benzene (C6H6) with volumes 50 mL and 125 mL,…

A: Volume (Toluene)=50 mL 1 mL= 1 cm3 Mass of toluene= Density x Volume Mass of toluene= 0.867 g/cm3 x…

Q: ensity of 3M solution of NaCl is 1. 25 g/ mL. Calculate the volume of water required to make 1000 mL…

A:

Q: Calculate the mass (in grams) of sodium sulfide that is needed to make 350 mL of a 0.50 mol/L…

A: Molarity of sodium sulfide solution = 0.50 mol/LVolume of solution = 350 mL = 0.350 LMass of sodium…

Q: 7. Calculate the molarity of Sn²+ ion for a solution that the concentration of Sn2+ at 20°C was…

A:

Q: What is the molarity of a concentrated HBR solution if the solution is 69.7% Hbr by mass and has a…

A: 69.7% HBr by mass means, 69.7 g of HBr in 100 g of solution. So, number of moles of HBr in solution…

Q: 1.00 L aqueous solution that contains 5.00 g MgCl2 was diluted to 2.00L. a. what is the…

A:

Q: The data table below is used for the next two questions. For both questions, you're being asked…

A:

Q: how much water needs to be added to a 300 ml of 3.0 M solution to obtain a final solution with 2.0…

A:

Q: the molarity o) and final vo

A:

Q: 1. A gas has a volume of 300 mL at 300 mm Hg. What will its volume be if the pressure is changed to…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 180 C 13. If 18 gram glucose ( CH,0,) is present in 1000 gram of solvent, the solution is said to A.…

A: (13) Molality of the solution is the number of moles of solutes dissolved in one kilogram of…

Q: %3D What mass of NaHCO3 is needed to make 20.0 mL of a 1.00 M solution? Molarity (M) = moles/ Liter…

A: Given: The volume of the NaHCO3 solution = 20.0 mL The molarity of the solution = 1.0 M We have to…

Q: Determine the percent by mass of MgCl2 if 3.9 g of MgCl2 is dissolved in 28.3 g of water.

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

Q: 2.) What ppm of NaCl present in 0.05% by mass in 99.95 mL saline solution. a. Find the mass of…

A: Given: Weight of NaCl = 0.05% by mass Volume of NaCl = 99.95 mL Molarity of sulphuric acid = 0.48 M…

Q: Calculate the hydroxide ion concentration of a 0.0750 M NH, solution, The pre- đominant equilibrium…

A: Base dissociation constant Kb is utilized to determine the basic nature of a solution. It refers to…

Q: a) A 400 mL solution contains 0.138 g NaCl. Calculate the ppm concentration of NaCl. b) 32.0 g of…

A:

Q: QUESTION 3 A student makes a solution by dissolving 25.4 g of NaOH into 450 g of water. What is the…

A: Given, Mass of NaOH = 25.4 g Mass of water = 450 g

Q: Determine the percent by mass of MgCl2 if 3.4 g of MgCl2 is dissolved in 41.6 g of water.

A: Percent by mass: mass of solute/mass of solution*100

Q: Consider a solution composed of toluene (C7H8) and benzene (C6H6) with volumes 50 mL and 125 mL,…

A: The molarity of a solution depends on the number of moles of the compound and the volume of the…

Q: How many moles of NaOH are present in a 0.881 mol/kg of NaOH solution if there is 350 mL of  water…

A: Molality: The number of moles of the solute dissolved in one kilogram of the solution is known as…

Q: Calculate the molarity of 0.9 moles of MgCl, in 2.6 L of solution. Report your answer with 3 decimal…

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

Q: 5: An 8.0% NaCl solution has a density of 1.05 g/mol. What is the molar concentration (M) of the…

A: Density, mass and volume are related as Density(d) = mass/volume. Volume = mass/density. Given, 8%…

Q: 5. A sample of saline contains 45 ml of saline in 128 ml of water. What is the percent by volume of…

A: Solution :       Concentration in percentage by volume is expressed as the fraction of volume of…

Q: Calculate the molarity of a 37.0 % by weight hydrochloric solution. The density of the solution is…

A:

Q: The concentration unit one part per billion (one ppb) is equivalent to one _____ of solute per _____…

A: In this question, we will see that 1ppb is equivalent to which unit.  ppb and ppm both are…

Q: A solution is made by dissolving 17.8 g of magnesium sulfite, MgSO3, in enough water to make exactly…

A: Molarity is defined as number moles of solute in 1 litre of solution.

Q: * What is the molarity of a solution resulting from combining 1.23 g of NaCl in 137 g water. The…

A: To solve this problem we have to calculate the molarity of the solution.

Q: How would you prepare  x 10 ^2 mL of 0.9 M NaOH solution, starting from 5.01 M stock solution?…

A: Given that, M1=5.01 M, V1=? M2=0.9 M , V2= 2×102 ml = 200 ml  then,

Q: 10. How many moles of NaCl are contained in 300 mL of 0.200 m NaCl solution? The density of the…

A: Given:Calculate the moles of NaCl.Mol is a measurement unit for substance amounts. It is commonly…

Q: find the concentration in terms of molarity if this solution is diluted to 0.75 L

A: Volume (V) = 0.75 L Weight of non electrolyte (solute) = 60 gm Molar mass of solute (MM) = 200…

Q: 5. Consider a solution composed of toluene (C7H8) and benzene (C6H6) with volumes 50 mL and 125 mL,…

A: The homogeneous mixture of one substance into another is known as a solution. The component that is…

Q: 3. Calculate the number of gram of NaOH that must be added to 250mL of water to make a 15% NaOH…

A:

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.