How much of a 25% solution do you need to make 20 mL of a 5% solution? Do not put any units in your answer, just the number of mL.

Q: The Environmental Protection Agency limit for lead in drinking water is 15 ppb. A 5.090 kg solution…

A: Consider the given information is as follows; Mass of solution = 5.090 kg = 5.090×1000=5090 g Mass…

Q: Consider a 0.250 M solution of KCl (molar mass= 74.55 g/mol) How many moles of KCI are in 168 ml of…

A: The moles of KCl in the solution is = 0.041 mol

Q: A solution contains 4.1 x 10-4 g of Cl-1 per kilogram of solution.  What is this in ppm?

A:

Q: Determine the mass of NaCI in grams to make the following solution: 5% NaCI in a total volume of 168…

A: We have to calculate the mass of NaCl for the solution

Q: In the laboratory you are asked to make a 0.675 m zinc chloride solution using 14.5 grams of zinc…

A: Molality is measure of number of moles of solute which is present in 1000g or 1kg of solvent. The SI…

Q: How many grams of CaCl2 are needed to make 330 mL of a 7.55 M solution?  Answer to 1 decimal place…

A: Molarity means the number of (M) moles of any solute particles dissolved in a liter of the solution.…

Q: Be sure to answer all parts. How would you prepare 275 mL of a 0.926 M NaOH solution, starting with…

A: Given information: Concentration of stock solution = 5.26 M Concentration of NaOH = 0.926 M Volume…

Q: X 10. A students dissolves sugar in 0/1 water to make a sugar solution. What solvent did the student…

A: We know that Solution : a solution is a homogeneous mixture of two or more substances, solution…

Q: How much of an 8.0 M HCl solution should you use to make0.400 L of a 2.7 M HCl solution?

A: On dilution number of moles remain same

Q: Please fill out like how the problem is set up or circle the answer or answers

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: 20. What will be the concentration resulting from mixing 20 mL of a 4% NaCl solution with 80 mL of a…

A:

Q: How many g of HCl are in 100 mL of 1M HCI? 3.64 g 100 mL 64 g 1 mole 1g

A: Mass = number of moles x molar mass Number of moles = Molarity x Volume in L

Q: How many moles of NaCl are in 4,770 mL of a 3.71 M solution? Report your answer with 3 decimal…

A:

Q: If I add 28 mL of water to 187 mL of a 3 M NaOH solution, what will the molarity of the diluted…

A:

Q: What volume of each solution contains 0.12 molmol of KClKCl Express your answer using two…

A: a. Molarity of KCl = 0.247 M Molarity = number of moles (mol)Volume of the solution (L) 0.247 M =…

Q: The most useful conversion factor to convert between solution volume and moles is    mole ratio…

A: The most useful conversion factor to convert between solution volume and moles is  ?

Q: lab you are required to make 250.0 mL of a 1.1 M NaOH solution. How many grams of NaOH should you…

A: Molarity = n/V  n = moles of solute  V = volume of solution moles of solute = mass of solute/molar…

Q: If a chemist wishes to dilute a 1.000 x 103 mg/L stock solution to prepare 5.000 x 102 mL of a…

A:

Q: You have 5.5 grams of a substance with a molar mass of 26.98 g/mol.  You dissolve this substance in…

A:

Q: How many moles of NaOH are contained in 660.0 mL of 0.235 M NaOH solution. Use 3 significant…

A: Given : Concentration of NaOH = 0.235 M And volume of NaOH solution = 660.0 mL

Q: How much 0.7 M CaCl2 solution is required to make 381 mL of a 0.4 M CaCl2 solution? Answer in

A: Here we use the formula M1V1= M2V2.

Q: Molar mass NaOH 40.00 mol density NaUH 1.08 ml Q2. Lisa is given a container which only contains…

A:

Q: How many milliliters of a 7.4 M NaOH solution are needed to make 694 mL of a 2.3 M NaOH solution?…

A:

Q: Can u help me answer this 2 questions with complete solution please thank you 1. The density of…

A: (1) Given that -  Density of acetonitrile, C2H3N = 0.786 g/mL  Density of methanol, CH3OH = 0.791…

Q: In a solution, there is 11.0 mL (110.605 g) solvent and 5.24 mL (6.0508 g) solute present in a…

A:

Q: If 0.785 g of a gas dissolves in 0.68 L of water at 2.5 atm of pressure, how much of the gas will…

A:

Q: How much water would I need to add to 300 mL of a 1.6 M NaCl solution to make a 0.9 M solution?

A:

Q: What volume of water to be added to a vial containing 400 mg sodium valproate to produce a solution…

A: For 100 mg/mL solution , 400 mg of sodium valporate is to be dissolved in 400mL+ volume of water…

Q: 6. What is the % mass/volume of a 4.00 M solution of NaCl?

A: Interpretation-  To determine the % (mass / volume) of a 4 .00 M solution of NaCl .    Concept-  To…

Q: While working in a pharmaceutical laboratory, you need to prepare 0.250 L of a 1.60-M NaCl solution.…

A: The objective of this question is to determine the mass of NaCl required to prepare a 0.250 L of a…

Q: a 3.48 M aqueous solution of NaCl is needed. In order to make 1500 ml of this solution, the mass of…

A: Molarity is defined as the number of moles per liter of the solution.

Q: You are asked to make 100 mL of a 1 mM solution. How much of the 1 M concentrate do you add? How…

A:

Q: How many grams of Na2CO3 is present in 0.680 L of 0.704 M Na2CO3 solution? Do not include unit. Keep…

A:

Q: Calculate the volume in liters of a 3.20 M KCl solution to obtain 0.25 mol of KCl. Express your…

A: given, the molarity of the solution = 3.20 M moles of KCl = 0.25 mole

Q: Part1: 1.05×10-1  m glucose solution made by dissolving the glucose in 100.0 kg of water: ____ mol…

A:

Q: Calculate the molarity of a solution made by dissolving 0.382 mol glucose in enough water to make…

A: Given, moles of glucose = 0.382 moles Volume of Solution = 1.32 L  Molarity = ?

Q: 2. You are asked to make 100 ml of a 1 mM solution. How much of the 1 M concentrate do you add? How…

A: This is a dilution problem. To calculate the volume of concentrate solution we can use the formula -…

Q: How many grams of NaCl is needed to make 236.5 mL of a a 3.04 M solution? Answer to 1 decimal place.

A:

Q: How many mL of 12.1 M HCL is needed to make 1 L of 100 mM HCl?

A:

Q: How much 3.50 M HCl solution can be made by diluting 250 mL of 10 M HCl?

A:

Q: the sucrose concentration in the remaining 300 mL

A:

Q: In the laboratory you are asked to make a 0.170 m ammonium acetate solution using 455 grams of…

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

Q: Calculate the volume of 0.500 M KBr solution that would contain 0.0333 g of KBr.

A: Given : concentration of KBr = 0.500 M Mass of KBr = 0.0333 g Molar mass of KBr = Atomic mass of K +…

Q: This is "Solution" of chemistry   What volume of a 0.20-M K2SO4 solution contains 57 g of K2SO4

A:

Q: Determine the mass of NaCl in grams needed to make the following solution: 4 % NaCl in a total…

A:

Q: A dopamine vial that contains 200 mg in 5 mL is diluted with 0.9% sodium chloride to prepare a total…

A: Answer:In dilution, only volume of the solution changes but total mass of a specie remains same. To…

Q: The doctor has prescribed a 1:1000 solution. You only have available a 2% mixture in a 300 mL…

A: The objective of the question is to determine the amount of a 2% mixture needed to prepare a 1:1000…

Q: An enzyme stock solution is 100 µg/µL. The stock solution is serially diluted 4 times by a dilution…

A: Dilution means addition of solvent to a solution in order to decrease its concentration. Dilution…