3. A tank contains a 200 liters of fresh water. Brine containing 2.5 N/liter of dissolved salt runs into the tank at the rate of 8 liters/min and the mixture kept uniform by stirring runs out at 4 liters/minute. Find the amount of salt when the tank contains 240 liters of brine. The concentration of the salt in the tank after 25 minutes’ amounts to how much?

Q: You have 130.0 mL of a 0.245 M salt solution in a coffee mug. After leaving the mug out for weeks,…

A: Answer :-           130.0 ml of 0.245 M salt solution in a coffee mug after a week a lot of water…

Q: 1.813 g C4H4O4 is dissolved in H20 and titrated with NaOH. 24.9 mL of a NaOH solution were required…

A: Given Mass of C4H4O4 = 1.813 g Volume of NaOH = 24.9 ml

Q: What is the mass % of acetonitrile in a 2.77 M solution of acetonitrile (MM = 41.05 g/mol) in water?…

A: Mass percentage or percentage by weight is one of the concentration terms that indicates the mass of…

Q: Objective KTIOV A chemistry student weighs out 0.0434 g of sulfurous acid (H,SO,), a diprotic acid,…

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

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A: A stock solution is prepared by dissolving the solute into a solvent. The solution is further used…

Q: 189 mL of a 1.9 M solution of KBr is diluted to 668 mL. What is the new concentration of the…

A: Answer 8 :-  New concentration of solution = 0.537 M

Q: I have 571 mL of a 4.1 M NaCl solution. If I boil the water until the volume of the solution is…

A:

Q: You measure 50 milliliters (ml) of an unknown liquid and find out it weighs 50.54 g. You then add…

A: a) Since mass of solution = mass of unknown liquid + mass of salt added  Since mass of unknown…

Q: Which type of glassware should be used to make this How should the correct amount of solute be…

A: As A,B,C,X do not signify what they represent in the questions. So I'm solving other two parts.

Q: A Chemistry student has to prepare 155 mL of 0.100 M KI in water. She finds a bottle that states it…

A: The required solution is 155 millilitres of 0.100 M KI in water.

Q: Your protocol calls for a 0.15MM NaCl solution. How would you dilute your 3M NaCl solution to 0.15M…

A: 11) The total volume of the solution is 500μL(0.0005L) The concentration of the solution is 3M. We…

Q: A chemist reads a solubility table and finds that 38.0 grams of table salt is the maximum amount of…

A: Solubility :- The maximum amount of solute that can be dissolved in given amount of solvent is…

Q: Suppose you would prepare a standard solution. What laboratory glassware you must appropriately use…

A: Preparing a solution of known concentration is the most common activity in any analytical lab. The…

Q: A chemist needs to create a 50% HCI solution. (HCt is hydrochloric acid. A "50% HCl solution"…

A:

Q: A sample of pure acetyl salicylic acid had a mass of 0.268 grams. It was dissolved in NaOH and…

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

Q: Microbiologists use acid-alcohol when performing a cell stain of the pathogen Mycobacterium…

A: It is given that  3% (weight/volume)HCl is made in ethanol solution =3 gm per 100 ml solution…

Q: 15 16 17 18 19 20 21 22 23 24 26 A chemist must prepare 0.225 L of 5.00 M aqueous silver perchlorate…

A:

Q: Five different solutions were prepared in the laboratory. One was prepared by dissolving 7.1 g…

A:

Q: At your next lab assignment, you are instructed to prepare 250 mL of 0.500 mol/L HCl by dilution of…

A:

Q: There are 10 groups in your class. In the formulation of Concentrated Peppermint Water, you are…

A: Given: Volume of final solution = 800 mL. And volume of stock solution taken = 756.9 mL.

Q: What is the concentration, in ppm, if 0.9081 grams of Calcium chloride is dissolved in 250.0 ml of…

A: 1 ppm (parts per million) is the 1 part weight of solute in 1 million parts volume of solution. ppm…

Q: 1. You have a stock solution of 14.2 M NH3. How many milliliters of this solution should you dilute…

A:

Q: 1. A blood serum sample is analyzed and found to contain 102.5 µg Ca*/mL serum. The density of the…

A: 1. Here we will calculate concentration of Ca2+ with different unit. The density of the serum is…

Q: In the laboratory you dilute 5.54 mL of a concentrated 3.00 M hydrochloric acid solution to a total…

A: Given data is as follows: The Molarity of the hydrochloric acid  M1=3.00 M The volume HCl = 5.54 mL…

Q: A water sample collected downstream from a gold-mining operation returns a cyanide concentration of…

A: The gold cyanidation can be described as the cyanide procedure that is used for the extraction of…

Q: This lab used 6 M HCl that was diluted from a higher concentration.  If your lab instructor asked…

A: • Concentration (C) = No. of molesVolume• No. of moles = Concentration (C) x Volume (V)# If dilution…

Q: 'm trying to calculate the amount of sucrose in Cola. volume=50mL mass = 54.2060 g Density=…

A: Number of moles of sucrose is equal to the mass of sucrose divided by molar mass of sucrose.

Q: calculate the mass percent of your solution. show your calculations

A: Mass percent is the physical quantity used to define the concentration of the species Mass percent…

Q: A 10.00 mL sample of 2.00 M Na3PO4 solution is diluted to a total volume of 150.0 mL. A sample of…

A: Given: Concentration of Na3PO4 stock solution = 2.00 M. Volume of Na3PO4 stock solution used = 10.00…

Q: A student made 10.0 mL of a 0.750 M solution in the following way. First, the student took some…

A:

Q: Chlorine is toxic to fish. Even at low concentrations, it can damage their gills. An aqueous…

A: The concentration of chlorine in water is defined as 10 ppm. This implies that 10 g of chlorine is…

Q: 1. A blood serum sample is analyzed and found to contain 102.5 ug Ca2*/mL serum: The density of the…

A:

Q: A cola drink contains 10.6 g of sucrose per 100 mL. (i) Calculate the molarity of the sucrose…

A: Given : Mass of sucrose i.e C12H22O11 = 10.6 g And volume of solution = 100 mL = 0.100 L…

Q: A 21.8 mL solution of 14.2 M HCl is diluted to 228 mL. What is the new concentration of the acid…

A: Given : Initial concentration of HCl = 14.2 M Initial volume of solution = 21.8 mL And final volume…

Q: FREE-RESPONSE QUESTIONS Calculators can be used in this section, A periodic table and formula chart…

A: Given that:  Mass of the dime for 100 mL solution = 2.490 g Wavelength for analyzing the solution =…

Q: What is the concentration of a NaCl solution made from taking 22.64 mL of a 12.67M NaCl solution and…

A: Given information: Initial volume (V1) = 22.64 mL Final volume (V2) = 1.25 L Initial concentration…

Q: 4.84 mL of a dark blue solution with a dye concentration of 15.72 %m/v is diluted to a total volume…

A: Given: Initial concentration of dye (M1) = 15.72 %m/v Initial volume V1 = 4.84 mL Final volume V2 =…

Q: A chemist collected thre samples. Their masses were 0.1220 g, 0.013746g and 0.00031 g. With respect…

A: Since you have asked questions with multiple parts we will solve the first 3 parts. For the answers…

Q: Mass of evaporating dish 69.148 Mass of evaporating dish and KCl solution 77.885 Mass of KCl…

A: Given Values: Mass of evaporating dish is 69.148 g Mass of evaporating dish and KCl solution is…

Q: A solution is made by combining 4.00 g of sugar and 100 mL of water (density of water = 1.00 g/mL).…

A: %w/w = mass of solute/mass of solution*100

Q: 54. Potassium sulfate has a solubility of 15 g/100 g water ar 40°C. A solution is prepared by adding…

A: Given : solubility of potassium sulfate i.e K2SO4 is 15 g/100 g water  Mass of K2SO4 added = 39.0 g…

Q: What mass of potassium permanganate would be required to make 500.0 mL of solution with a…

A: When two compounds are mixed together and they form a solution. The compound which is present in…

Q: The volume of a 1.00 M HCl solution must be diluted to obtain 200 mL of a 0.250 M HC1 solution is…

A: The Volume of 1.00 M HCl solution after dilution can be calculated as follows: M1V1 = M2V2

Q: A 7.91 mass % aqueous solution of ethylene glycol (HOCH2CH2OH) has a density of 1.36 g/mL. Calculate…

A: Density is defined as mass per unit volume. Mathematically, it is expressed by equation (1).Molarity…

Q: 7B.

A: Since mass of solute is constant and we are adding water only. Hence the final concentration =…

Q: 1) What is the concentration in ppm of a solution made with 18.5 g of salt and 125000.00 g of water?…

A:

Q: A chemist must dilute 29.5 mL of 11.7 µM aqueous zinc oxalate (ZnC,04) solution until the…

A: In the dilution process, the relationship between initial and final concentrations and volumes of…

Q: 1.872 g C4H4O4 is dissolved in H20 and titrated with NaOH. 12.3 mL of a NaOH solution were required…

A: Applying formula  Molarity = no. of moles of solute /vol of sol(Lt)  No. Of moles of C4H4O4 =…

Q: A student must prepare 5.000 L of 0.2500 M Na2CO3 (105.99 g/mol). Which is the best procedure for…

A: Given Volume of solution = 5 LMolarity of solution = 0.25 MMolar Mass of Na2CO3 = 105.99 g/mole

Q: How much water (in mL) should you add to 50.0 mL of 0.300 M H2SO4 (aq) to get a solution of 0.130 M…

A: Given: The initial volume, (Va)=50 mL The initial concentration, (Ma)=0.3 M The final volume,…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".