A student obtains the following data:  a- Mass of evaporating dish                                                 21.345 g   b- Mass of evaporating dish and saturated NaCl solution 42.817 g   c- Mass of dish and NaCl after evaporation                         38.915 g   Report the Mass % of NaCl in this solution.  Write the number as a percentage with the correct number of significant figures as shown. (i.e. 25%)  There should be no space between the numbers and the % sign.

Q: A laboratory procedure calls for making 520.0 mL of a 1.2 M KNO3 solution. How much KNO3 in grams…

A:

Q: Calculate the volume in liters of a 0.18M potassium permanganate solution that contains 75.0 g of…

A: Given datas ;  Mass = 75.0 g  Molarity = 0.18 M  Molar mass of KMnO4 = 158.034 g/mol So,  Number of…

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A:

Q: 9. If you pour 60 grams of KCl into 100 g of water at 70°C, and stir vigorously, which type of…

A: 9. Given information,   Mass of KCl = 60 g   Mass of water = 100 g   Temperature = 70oC

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A: According to the Archimedes principle, the volume of any solid submerged in water water is equal to…

Q: A chemist mixes 81.4 g of benzene with 49.9 g of heptane and 10.0 g of 2-ethyltoluene. Calculate the…

A: Mass percent is the percent ratio of mass of element to the total mass of the compound.

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A: Colligative properties: The colligative properties are those properties of solutions that depend on…

Q: /hat is the molarity of a solution that contains 639 g CuSO4 in 6.00 L of solution? n the 'Answer'…

A: Molarity = number of moles of solute dissolved per litre of solution.

Q: O CHEMICAL REACTIONS Using molarity to find solute mass and solution volume Brittney v A chemist…

A:

Q: Calculate the volume in milliliters of a 3.02/mol*L potassium iodide solution that contains 100.g of…

A: Molarity ( M ) :- It is defined as the number of moles of solute present in one litre ( 1000 mL ) of…

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A: We have to find mass percent of the methanol

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A: Density of a solution is dependent upon the mass and the volume of the solution.density = mass…

Q: A solution is made using 200.0 mL of methanol (density 0.7920 g/mL) and 951.1 mL of water (density…

A:

Q: solution is made using 450.0 mL of isopropanol (density 0.7860 g/mL) and 953.5 mL of water (density…

A: Given :  Volume of isopropanol = 450 ml  Density of ispropanol = 0.7860 g.ml-1  Volume of water =…

Q: laboratory procedure calls for making 510.0 mL of a 1.3 MKNO3 solution. How much KNO3 in grams is…

A:

Q: A certain liquid X has a normal freezing point of –3.20 °C and a freezing point depression constant…

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Q: O CHEMICAL REACTIONS Using molarity to find solute mass and solution volume -7 Calculate the volume…

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Q: A solution is prepared by adding 15.0L of acetone to a sample of pure water, and the total volume of…

A: It is based on the concept of concentration terms .Here we are required to find the volume…

Q: A solution is made using 200.0 mL of methanol (density 0.7920 g/mL) and 1035.1 mL of water (density…

A: Volume of methanol = 200.0 ml  Density of methanol = 0.7920 g/ml  Volume of water = 1035.1 ml…

Q: An empty beaker is placed on a balance, and its mass is recorded at 42.513 g. The beaker is removed…

A: In this question, we want to determine the mass of the sodium chloride solution ( NaCl )  You can…

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A: Mass percent or weight percent of a solution is the mass of the solute by the mass of the solution…

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A: we have to calculate the volume of stock solution needed

Q: 32.2 mg NaCl in 108.9 mLmL of solution         Express the molarity in moles per liter to three…

A:

Q: Calculate the number of moles of sodium hydroxide (NAOH) present in 51.9-mL of a 0.613 M NAOH…

A: The number of moles (N) of a solute present in a solution with a molarity of C (M) and a volume of V…

Q: A solution is made using 200.0 mL of methanol (density 0.792 g/mL) and 1087.1 mL of water (density…

A: Given,volume of methanol = 200.0 mLdensity of methanol = 0.792 g/mLvolume of water = 1087.1…

Q: concentration

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Q: A potassium bromide solution is 7.55% potassium bromide by mass and its density 1.03g / m * L . What…

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Q: A student sets up the following equation to solve a problem in solution stoichiometry. (The ? stands…

A: We are going to determine the final unit.of this expression.

Q: A chemist prepares a solution of nickel(II) chloride (NICI,) by measuring out 1.2x 10 jumol of…

A: Moles of NiCl2=1.2×102 μmol Volume=250 mL

Q: How many grams of water must be used to prepare a 17.0 percent by mass (%m/m) sodium hydroxide…

A: Since % m/m is defined as  % m/m = mass of solute X 100 / mass of solution  mass of solute (NaOH)…

Q: A chemist must dilute 33.3 mL of 592. mM aqueous barium chlorate (Ba(CIO,)) solution until the…

A: During dilution the formula to be used is V1 S1 = V2 S2 where, V1  = initial volume S1 = initial…

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Q: Calculating A chemist prepares a solution of calcium sulfate (CaSO) by measuring out 0.79 g of…

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Q: A chemist prepares a solution of barium chloride BaCl2 by measuring out 88.μmol of barium chloride…

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Q: Measured Mass of NaCI: 11.70 g Measured Volume of Water: 100.0 mL Answer each question with correct…

A: Information about the question

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Q: Using the mass of the empty beaker and the mass of the beaker + KOH, calculate the mass of KOH…

A: Number of moles = Mass in g/molar mass

Q: You have a solution of NaCl that has a molarity of  3.359 M.  You want to make a dilute solution of…

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Q: A solution is made using 200.0 mL of methanol (density 0.792 g/mL) and 563.1 mL of water (density…

A: Given DataVolume of methanol = 200.0 mLDensity of methanol = 0.792 g/mLVolume of water = 563.1…

Q: Suppose 345. mL of dioxane and 298. ml. of toluene are mixed, and the final solution has a volume of…

A: Volume of dioxane = 345 mL Volume of toluene =  298 mL Final volume of the solution = 637 mL Density…

Q: You have 741.9 mls of water and you want to make a 1.184 molar (M) solution of barium hydroxide.…

A: Given: The volume of water= 741.9 mL Molarity of Barium hydroxide solution=1.184 M To calculate:…

Q: A solution is made using 450.0 mL of isopropanol (density 0.7860 g/mL) and 137.5 mL of water…

A: The objective of this question is to calculate the mass percent of isopropanol in a solution made…

Q: A chemist prepares a solution of iron(III) bromide (FcBr,) by measuring out 483, umol of iron(III)…

A: From given dataNumber of moles, n = 483mol × = 0.483 mmolVolume of solution, V = 400 mL = 0.400 LAs,…