User Account

All Pages

Compute the density of air at the experimental conditons

Assignment Help Chemistry
Reference no: EM13182767

A student observer that a 126 mL dry flash with a foil cap weighs 50.162g. The student then adds 5mL of an unknown volatile liquid and heats the flash in a boiling water bath at 99.2C until all liquid dissappears. The flask, foil, and unknown after heating that is dry and cool weigh 50.610g. The barometric pressure in the laboratory is 743.3mm Hg; the laboratory temperature averages 22.3C; the vapor pressure of the unknown liquid is 160mmHg at 20C and the density of dry air at STP is 1.2929g/L.

A) What are he experimental conditions of T and P that will be used to calculate the mass of air in the flask?

B) Calculate the density of air at the experimental conditons identified in part A

C) Calculate the mass of air in the flask before the liquid was added.

D) Calculate the partial pressure of air in the flask after the liquid was heated and then cooled.

E) Calculate the mass of air in the flask after the liuid was heated and then cooled.

F) Calculate the mass of air lost

G) Calculate the mass of liquid, vapor and air in the flask before you correct for air lost

H) Calculate the mass of liquid, vapor and air in the flask after you correct for air lost.

I) Calculate the molecular weight of the unknown liquid.

Reference no: EM13182767

Questions Cloud

Why are economists opposed to licensure of medical facility : Vaccination schedules are predictable, meaning insurance coverage for vaccinations does not protect consumers against risks. Insurance coverage for vaccinations drives up costs because more people get vaccinated if coverage is available and becaus..
State produce a buffer solution that has a ph : You need to produce a buffer solution that has a pH of 5.38. You already have a solution that contains 10. mmol (millimoles) of acetic acid.
What is another term for the independent variable : describes a measure used to compare two different tests with the same group of participants to see how closely correlated the two sets of scores are with each other. Inter-rater reliability, Test-retest reliability, Parallel-forms reliability, Intern..
Difference in the asset structure of the two companies : How much working capital did each of these companies have at the end of 2007? Speculate as to their rationale for the amount of working capital they maintain.
Compute the density of air at the experimental conditons : Calculate the density of air at the experimental conditons identified in part A C) Calculate the mass of air in the flask before the liquid was added.
How much does labor earn if they can move first : Mr. and Mrs. Ward typically vote oppositely in elections and so their votes "cancel each other out." They each gain two units of utility from a vote for their positions (and lose two units of utility from a vote against their positions). However, ..
Explain the oxygen number density decrease : This race is a challenge to the human organism! By what percentage does the oxygen number density decrease between the start and the finish of the race?
Determine the ending balances : Compute the equivalent units of production for direct materials and conversion costs for September using the FIFO costing method and Determine the ending balances.
How many grams of nh4cl must be added to nh3 : How many grams (to the nearest 0.01 g) of NH4Cl (Mm = 53.49 g/mol) must be added to 550. mL of 0.906-M solution of NH3 in order to prepare

Reviews

Write a Review

Chemistry Questions & Answers

  What is the value of the freezing point depression

1.20 moles of a nonelectrolyte is dissolved in 1000 g of water. What is the value of the freezing point depression of this solution, given that Kf for water is 1.86 C/m?

  Define description of chemical reactions

Description of Chemical Reactions, Why when heating and cooling three different separate substances in open containers does the mass change in two of them (one loss mass; the other gained mass) but stays the same in the third when it is known that..

  Calculate the diffusion limiting current for the oxidation

Calculate the diffusion limiting current for the oxidation of an organic compound at an electrode in stagnant solution. Assume 6 electrons are involved in the reaction (n=6). C(org) = 0.01 M, D(org) = 2x10^-5 cm^2/s.

  Calculate the total mass of these letters

An element has two naturally occurring isotopes. Isotope 1 has a mass of 120.9038 amu and a relative abundance of 57.4%, and isotope 2 has a mass of 122.9042 amu.

  Explain determine the concentration of the dissolved ppm

A 50.00 ml sample of water was treated as above and the I2 titrated with 0.01136 M Na2S2O3, of which 8.11 ml were required to reach the end point. Determine the concentration of the dissolved O2 in M (moles/L) and ppm (mg/L).

  Write the net ionic equations for the precipitation reaction

write the net ionic equations for the precipitation reaction or reactions that occur. b) what are the spectator ions in the solution?

  State why is it important to standardize naoh solution

why is it important to standardize NaOH solution instead of taking an accurate and diluting it in a volumetric

  Compute the net charge of aspartic acid

Calculate the net charge of Aspartic Acid. Its given that Aspartic acid has a pK1 COOH at 1.99 and also a pK2 NH3 group at 9.90

  What is the molar concentration of the ammonia

If 18.4 mL of 0.800 M HCl solution are needed to neutralize 5.00 rm mL of a household ammonia solution, what is the molar concentration of the ammonia?

  How many grams of ni(oh)2 are produced

NiCl2(aq)+ 2NaOH(aq)---> Ni(OH)2(s)+ 2NaCl(aq) how many grams of Ni(OH)2 are produced from the reaction of 35.0 mL of a 1.75M NaOH solution and excess of NiCl2.

  What is the mass of the sphere

A thief plans to steal a gold sphere with a radius of 30.0 cm from a museum. If the gold has a density of 19.3 g/cm^3, what is the mass of the sphere?

  Chemiluminescence reaction will actually occur very slowly

Your chemiluminescence reaction will actually occur very slowly in air. What component of air will bring about this reaction and what is its approximate concentration in air? If you had a stoppered flask with basic luminol and then opened it to th..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd