1. In the Dumas Method for the determination of the molar mass of a vapor, the computed percentage error of the molar mass is 17.8902. What is the true value of the molar mass of the vapor, in mg/mmol if the computed molar mass in the experiment is 95.7890 g/mol? * A) 116.6596 B) 78.6522 C) 81.2527 D) 112.9258

Q: You use 500.0g of a solid to prepare a solution that has a concentration of 7.40% by mass. What is…

A: Given: Mass of solid solvent = 500.0 g. Concentration of solid in %(m/m) = 7.40 %

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A: Given: Volume of H2Cr2O7 =1920 cm3 Molarity of H2Cr2O7=1.76×10-3M  To find: Mass of oxygen

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A: The solution is given below -

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A: Given : Mass of solution = 600 g And % by mass of H3BO3 = 3.00 %

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A: The molarity of a solution is the number of moles of solute dissolved per liter of the solution.

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A: Since you have posted multiple questions, we are entitled to answer the first question only.

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A: Given, Molarity of Na2SO4 = 0.638× 10^(-3) M  And volume = 1.73 L    NA = avagadro's number

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A: We know that kilogram, nanogram and gram are the units of mass.

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A: Given: 1.78 g of magnesium chloride in 0.500 L new volume is 0.05 L

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A: Given, Suppose 58.3g of potassium nitrate is dissolved in 250.0ml of a 0.80M aqueous solution of…

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A: Given data, CO2 gas = 5.6 L 1 mole of CO2 occupies = 22.4 lit at S.T.P

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A: Mass of Ca3(PO4)2 = 37 g = mpercentage purity = 94 %Actual mass of Ca3(PO4)2 = M

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A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: 6.When 600 grams of a 3.00% solution by mass of Boric Acid (H3BO3) are crystallized, what mass of…

A: Mass percent strength = mass of solute (H3BO3)×100mass of solution   3.00 = mass of solute…

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A: Given : Mass of lithium selenium i.e Li2Se = 1.89 g Mass of Na2CO3 = 4.36 g Mass of S4O3 = 6.21 g

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Q: 9:06am ructions t to click Submit when completed! Question 17 Determine the molarity of a solution…

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Q: STARTING AMOUNT esc 0.0720 mol C₂H₂O₂ 62.08 g C₂H₂O₂ + ! 1 Q X X 0.0720 2 1.04 g C₂H₂O₂ 1.04 g…

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Q: If you dilute 20.0 mL of 1.50 M hydrochloric acid to 650. mL, what is the molar concentration of the…

A: First determine the number of moles of HCl present in 20.0 mL of 1.50 M HCl solution. HCl…