20.5 mL of mouthwash was used in the distillation experiment, The volume ethanol in the distillate...
In this lab, 10.0 mL of DI water were mixed with 32.34 mL of ethanol for distillation. Taking into account the volume of distillate you collected, calculate the new mole fraction of ethanol in the undistilled solution that remained in the distillation flask. The volume of distillate collected is 6.2 mL.
A chemistry student needs 75.0 g of pentane for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of pentane is 0,626 giem". Calculate the volume of pentane the student should pour out. Be sure your answer has the correct number of significant digits. Il mL X 5 ?
Calculate the volume in milliers of a 2.6 mol/L sodium chloride solution that contains 100 mmol of sodium chloride (NaCl). Be sure your answer has the correct number of significant digits. mL X 5 ?
ADVANCED MATERIAL Calculating mass percent composition Kaila - A chemist mixes 33. g of ethanol with 93. g of 2-ethyltoluene and 45. g of thiophene. Calculate the percent by mass of each component of this solution. Be sure each of your answer entries has the correct number of significant digits. component mass percent ethanol 0 % x 6 ? 2-ethyltoluene thiophene Explanation ) Check 2019 McGraw-Hill Education All Rights Reserved. Terms of Use Privacy
uuy tic pluulelll alla proposed Solution below. Is the final answer correct? Then click button in front of the line with the first mistake and correct the mistake. Note: don't worry about correcting the rest of the solution, after the first mistake. Problem: The density of r e substance is its mass per unit volume. The density of ethanol has been measured to be 789 .Calculate the mass of 355. mL of ethanol. Be sure your answer has a unit...
Type your answer in the box. A buret starts with a volume of 10.10 mL and titrant is delivered until the buret reads 32.60 mL. The precise volume of titrant added was ml. Use the correct number of significant digits. Do you know the answer? I know it Think so Unsure No idea
1) Calculate the volume in mL for a solid block given that its mass is 19.0g and its density is 4.0g/mL. *Please explain steps* 2) Show the calculation and the answer to the correct number of significant digits. (123.000g – 112.990g)(0.6305) -------------------------------------------- (1.6000mL)(7.07x10-1)
Calculate the volume in milliliters of a 4.3M silver nitrate solution that contains 100. g of silver nitrate (AgNO,). Round your answer to 2 significant digits. XI ? Wine goes baill soon after opening because the ethanol (CH.CH,OH) in it reacts with oxygen gas (0) from the air to form water (HO) and acetic acid (CH,COOH), the main ingredient of vinegar. What mass of ethanol is consumed by the reaction of 8.35 g of oxygen gas? Round your answer to...
A 23.74 mL volume of 0.0981 M NaOH was used to titrate 25.0 mL of a weak monoprotic acid solution to the stoichiometric point. Determine the molar concentrations of the weak acid solution. Express your answer to the correct number of significant figures,
Pt 1 - Glycerol (C3H8O3), also called glycerine, is widely used in the food and pharmaceutical industries. Glycerol is polar and dissolves readily in water and polar organic solvents like ethanol. Calculate the mole fraction of the solvent in a solution that contains 2.21 g glycerol dissolved in 22.00 mL ethanol (CH3CH2OH; density = 0.7893 g/mL). Round to four significant digits. Pt 2 - Use your answer to Part 2 to calculate the vapor pressure of the solution at 20°C...