You are working in the laboratory and are testing the salinity of ocean water in various areas along the gulf coast. What is the mass % of sodium chloride in a 250.0 mL sample that contains 6.80 g sodium chloride? Assume the density of the ocean water is 1.03g/mL.

Q: A chemist adds 650.0 mL of a 5.99 g/dL potassium dichromate (K,Cr,O,) solution to a flask. Calculate…

A: Step 1. Calculate Molarity of potassium dichromate (K2​Cr2​O7​) solution:   Strength of potassium…

Q: A chemistry student weighs out 0.0737 g of acrylic acid (HCH,CHCO,) into a 250. mL volumetric flask…

A: In a titration, the equivalence point is that point where, the total amount of titrant is consumed…

Q: Normal saline solution (the kind you receive intravenously for medical purposes) is made by…

A: Molarity is defined as the number of moles of solute present in 1 liter of solution.  Mathematically…

Q: Assume the density of water is exactly 1 g/mL, what is the mass of solute in 1 L of a solution with…

A: Given, The density of water = 1g/mL The volume of solution = 1L Concentration = 1μg/mL

Q: You can calculate cost effectiveness using the following formula: volume of HCI neutralized per…

A: It is given that 23.73 mL of HCl is needed to neutralize one doze which is 2 tablets and the cost of…

Q: Mass of 1L Substance 810 g 1100 g 1250 g 1040 g Alcohol Ethylene glycol (antifreeze) Glycerin…

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Q: A sulfuric acid (H2SO4) solution with a concentration of 6.00 M has a density of 1.34 g/mL. What is…

A: Mass percent of solute in a solution represents its concentration in the given solution, which…

Q: The main chemicals present in a cup of coffee are water, caffeine, and tannins (acidic polyphenols…

A: A question based on analytical separations that is to be accomplished.

Q: 8) What volume of 0.123 M NaOH contains 25.0 g of NaOH? Express your answer in milliliters.

A: Molarity = 0.123 M

Q: A chemist prepares a solution of sodium bromide (NaBr) by measuring out 33. mg of NaBr into a 250.…

A:

Q: (a) Given a mixture of solid potassium nitrate, solid cobalt (III) chloride, and solid lithium…

A: a) If a mixture of solid potassium nitrate, solid cobalt (II) chloride and solid lithium bromide is…

Q: Does it make a difference if you use a volumetric flask vs a beaker vs a graduated cylinder to make…

A: There is a difference in the utility of the volumetric flask, beaker, and graduated…

Q: What is the mass % of ethylene glycol in a 2.61 M solution of ethylene glycol (MM = 62.07 g/mol) in…

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Q: You are making a rubbing alcohol (=isopropyl alcohol) solution to disinfect surfaces. You start with…

A: • The values provided in the question are:-    i) Initial volume of isopropyl alcohol solution, V1…

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: If you were to add 22 grams of medium to 1000 ml of distilled water. How many grams should you weigh…

A: Volume of water = 1000 mL  Mass of medium = 22 g  Mass required for 250 mL  = ?

Q: A doctor has ordered that a patient be given 3.00 g of glucose, which is available in a…

A: A numerical problem based on unit conversion, which is to be accomplished.

Q: You weigh a dry flask, and place a chunk of solid into it, then weigh it again. You then fill the…

A: We are given mass of flask = 58.97g  Mass of flask + solid = 135.91g  We have to find mass of solid

Q: An acid solution is 0.120 M in HCl and 0.200 M in H2 SO4. Part A You may want to reference (Pages…

A:

Q: A chemistry student weighs out 0.0529 g of lactic acid (HC,H,o,) into a 250. mL volumetric flask and…

A: Given information: Mass of lactic acid = 0.0529 g Molarity of NaOH = 0.0900 M

Q: Aluminum hydroxide is one component of antacids for hyperacidity. If one tablet contains 178 mg,…

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Q: Imagine that you are the CEO of a mining company. Your employees were able to excavate 2 ores,…

A: Metallic iron may be cheaply recovered from iron ores, which are rocks and minerals. Iron oxides…

Q: In an Erlenmeyer flask, 25.75 grams of potassium nitrate was dissolved thoroughly to prepare a…

A: a.)   Moles of potassium nitrate = given mass ÷ molar mass = 25.75 ÷ 101 = 0.255 (mass = density X…

Q: What volume of 1.12 M KMN04, in liters, contains 271 g of solute? Volume = 1.92

A: Molarity of KMnO4 = 1.12M Mass of solute, KMnO4 = 271g Molar Mass of solute, KMnO4 = 158g/mol Volume…

Q: What volume of a 1.63 mass % solution of Mg(NO 3)2 is needed to contain 0.316 grams of…

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Q: A mixture is made by combining 1.02 lb of salt and 3.76 lb of water. What is the percentage of salt…

A: Percentage of salt (%) by mass is given by percentage by mass = mass of salt x 100/mass of water…

Q: calculate the grams of magnesium hydroxide

A: Given,  Moles of magnesium hydroxide = 0.001 mol Molar mass of magnesium hydroxide = 58.305 g/mol As…

Q: The concentration of Al3+ ion in a sample of spring water is 24.7 ppm. What mass of Al3+ ion is…

A: 1. Given that : Concentration of Al3+ ion in spring water (in ppm) = 24.7 ppm Density of spring…

Q: A student mixes 1.0 mL of aqueous silver nitrate, AgNO3 (aq), with 1.0 mL of aqueous sodium…

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Q: From the information below, determine the mass of NH3 in 500 grams of concentrated ammonia?Ammonia,…

A: The ammonia solution is 28% by mass of solute; this means that 100 mL of the solution contains 28 g…

Q: A chemistry student must write down in her lab notebook the concentration of a solution of potassium…

A: Given that : The weight of the empty graduated cylinder = 8.0 g The weight of cylinder with…

Q: IV (intravenous) solutions are mixtures of sugars, salts and other aqueous solutes fed directly to a…

A: We have given that  Concentration of glucose = 5% by mass   Given that : density of Solution : 1g/mL…

Q: An alcoholic fermentation was conducted in the laboratory using 280 g glucose as substrate with a…

A: Formula used are given below: Density = Mass of substance / Volume of substance and Percent Volume =…

Q: Give an example of a mixture in which solute is solid and solvent is liquid.

A: NaCl (ionic solid) Water (liquid) Salt water

Q: A 0.75 M acetic acid solution has a density of 1.01 g/mL. What is the amount of solvent in grams in…

A:

Q: Given your experience in mass determinations and volumetric glassware, which factor used in…

A: The density can be determined by using the following formula,

Q: The main chemicals present in a cup of coffee are water, caffeine, and tannins (acidic polyphenols…

A: The density of water containing coffee(aqueous layer) is around 1.00 g/mL Given the density of the…

Q: A chemist prepares a solution of potassium iodide (KI) by measuring out 3.0 x 10 umol of potassium…

A:

Q: A 15.6-g sample of sodium carbonate is added to a solution of acetic acid weighing 19.7 g. The two…

A:

Q: One of the ionic compounds in sports drinks is potassium dihydrogen phosphate (KH2PO4). The label on…

A: The question is based on the concept of solutions.   molarity is a method of expressing…

Q: If you dissolve 27 g of sugar into 155 mL of water, what can youconclude about the mass and volume…

A: Density of a substance is equal to the mass of solution divided by its volume. Write the expression…

Q: The average concentration of dissolved gold in earth's oceans is  5.8 x 10^−9 g/L. of ocean…

A: 6380 μgram of gold are in 1.1x103 m3  of ocean water

Q: 50.0 kg mixture of salt and water is 15.0% (by mass) salt. Give the mass of the salt and water in…

A:

Q: A chemistry student must write down in her lab notebook the concentration of a solution of potassium…

A:

Q: Density of an aqueous solution of nitric acid is 1.43 g/mL. If this solutioin contained 36.0% nitric…

A: Given, Density of an aqueous solution of nitric acid = 1.43 g/mL Mass % of nitric acid = 36.0 %…

Q: Crime scene investigators keep a wide variety of compounds on hand to help with identifying unknown…

A: Elemental analysis of the compound revealed that it contains  63.57% carbon 6.000% hydrogen 9.267%…

Q: The following data are collected in an experiment to determine the amount of aspirin (the compound)…

A: 15.25 mL of base solution is required to neutralize 0.312 g of pure aspirin. Mass of a Bayer aspirin…

Q: One of the common intravenous fluids, called physiological saline, is a homogeneous mixture of NaCl…

A: Given: The mass % of NaCl in thephysiological saline, =  0.89% (m/m). The density of physiological…

Q: The concentration of sodium chloride in an aqueous solution that is 2.13 M and that has a density of…

A: Mass percent mainly aids in depicting solute’s potential, available in particular mixture. Mass…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.