Science

ChemistryQ&A LibraryA solution of pentane and ethanol (CH CH,OH) is boiling at 77.1 °C. A sample of the vapor above the solution is cooled until it condenses. This condensed sample is analyzed, and turns out to be 10.% pentane by mass. Calculate the percent by mass of pentane in the boiling solution. Here's some data you may need: normal vapor pressure density boiling point at 77.1 °C 36. °C pentane 0.63 mL 2451. torr 18 Ar ethanol 78. °C 0.79 mL 725. torr Be sure your answer has 2 significant digits. Note for advanced students: you may assume the solution and vapor above it are ideal. % x10 Explanation Check 2019 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy Lenovo oox X Esc X Home Insert End Delete FnLock F2 F1 F3 F4 F5 F6 F8 F7 F9 F10 F11 F12 ! & Backspac 1 4 2 3 7 R Q T P Tab F G JK A S H D apsLock +1I CO CO LO Calculate the percent by mass of pentane in the boiling solution. Here's some dat vapor pressure normal density boiling point at 77.1 °C g 0.63 mL 36. °C pentane 2451. torr ethanol 78. °C 0.79 mL 725. torr Be sure your answer has 2 significant digits. Note for advanced students: you may assume the solution and vapor above it are ide x10 Explanation CheckQuestion

Calculate the percent by mass of pentane in the boiling solution here some day you may need in the picture round your answer to two significant digits

Find answers to questions asked by students like you.

Q: Calculate the volume of carbon dioxide at 20.0°C and 0.941 atm produced from the complete combustion...

A: Given that,Volume of carbon dioxide is 20 degree C Pressure=0.941 atmMass of methane=1 Kg

Q: At 46 degrees Celsius and 0.880atm, a gas occupies a volume of 0.600L. What volume will it occupy at...

A: Click to see the answer

Q: The following data were obtained when a hydrate was heated 31.781 g crucible+ sample 30.501 g empty ...

A: The mass of sample is calculated as,

Q: Question 25 of 29> < Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric ...

A: Calculation for number of moles of HCl:

Q: Which of the following affects the half life of a radioactive sample? A the age of sample B, the siz...

A: Half-life period: The time required for a given substance to disintegrate into one-half of its initi...

Q: How would I solve for the mass ( in grams )

A: Given,Heat absorbed = 45.5 JMass of sample = ?Specific heat of sample = 0.82 J/g KChange in temperat...

Q: Identify the hybridization of the central atom in each of the following molecules and ions that cont...

A: The mixing of the wave function of the orbitals to obtain the orbitals of same energy is called hybr...

Q: Why is this E2 reaction wrong?

A: The major product is formed by the saytzeff’s rule in which the formation of more substituted alkene...

Q: Americium -242 is a beta emitter. Write an equation for this nuclear reaction and identify the produ...

A: Given, Americium-242 is beta emitter.Atomic number of Americium is 95.