Larson (1964) measured the diffusivity of chloroform in air at 298 K and 1 atm and...

Larson (1964) measured the diffusivity of chloroform in air at 298 K and 1 atm and reported its value as 0.093 cm2/s. Estimate the diffusion coefficient by the Wilke-Lee equation and compare it with the experimental value.

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5. A sample of N2 gas at 298 K and 1 atm. The diameter of N2...

5. A sample of N2 gas at 298 K and 1 atm. The diameter of N2 molecule is d = 3.6 × 10-10 m. (1) Calculate the collisions per second that one molecule of N2 make. (II) Calculate the mean free path 2 in meter. 6. An ideal gas has absorbed 900 J as a heat energy and the volume of the gas was decreased from 20 L to 10 L at constant external pressure of 5 atm. (1) The...

1. Calculate the adiabatic flame temperature for the following mixtures initially at 298 K: stoichiometric butane-air...

1. Calculate the adiabatic flame temperature for the following mixtures initially at 298 K: stoichiometric butane-air mixture, stoichiometric butane-oxygen mixture, 2.0% (by volume) of butane in air. Use enthalpies of formation and heat capacities from the NIST Chemistry WebBook, which can be found at http://webbook.nist.gov/chemistry/. 2) Repeat the adiabatic flame temperature calculation without the restriction on the possible products using an online version of the CEA calculator developed by NASA and located at http://www.grc.nasa.gov/WWW/CEAWeb/ceaHome.htm. Compare the results of the two...

Estimatethe total entropy change when 100.g of liquid water, initially at 298 K and 0.50 atm,is...

Estimatethe total entropy change when 100.g of liquid water, initially at 298 K and 0.50 atm,is first heated to boiling at 373 K and 1.00atm, and the steamcollected at 1.00 atmsubsequently heated and compressed to 500Kand20.atm. UseDHvap(at 100 ̊C, 1 atm)= 40.6 kJ/mol and the following values for the heat capacity:CP,m(H2O,l) = 75.2 J/(K mol), CP,m(H2O,g) = 35.0J/(K mol)

Liquid phenol at 298 k, 100kPa is burned with 152% theoretical air at 295k, 100kPa. Determine...

Liquid phenol at 298 k, 100kPa is burned with 152% theoretical air at 295k, 100kPa. Determine the adiabatic flame temperature. Enthalpy of liquid phenol is given as -96,232 kJ/kmol

Calculate the adiabatic flame temperature for the following mixtures initially at 298 K: stoichiometric butane-air mixture,...

Calculate the adiabatic flame temperature for the following mixtures initially at 298 K: stoichiometric butane-air mixture, stoichiometric butane-oxygen mixture, 2.0% (by volume) of butane in air. Calculate without the restriction on the possible products using an online version of the CEA calculator developed by NASA and located athttp://www.grc.nasa.gov/WWW/CEAWeb/ceaHome.htm. Compare the results of the two calculations and explain possible differences.

Solid magnesium reacts with aqueous hydrochloric acid, HCI, to form aqueous magnesium chloride and hydrogen, H2, gas at 298 K and 1 atm pressure

Solid magnesium reacts with aqueous hydrochloric acid, HCI, to form aqueous magnesium chloride and hydrogen, H2, gas at 298 K and 1 atm pressure. a. Write a balanced chemical equation, including phases, to describe this reaction. b. If a 1.512-g sample of magnesium is added to 0.2558 moles of hydrochloric acid, how many moles of hydrogen gas are formed? c. In an actual experiment in which the amounts of magnesium and hydrochlorie acid from part b (above) are reacted, 1.23 L of H2...

You are asked to prepare 3.4 L of a HCN/NaCNbuffer that has a pH of 9.69 and an osmotic pressure of 1.59 atm at 298 K.

You are asked to prepare 3.4 L of a HCN/NaCNbuffer that has a pH of 9.69 and an osmotic pressure of 1.59 atm at 298 K. What masses of HCN and NaCN should you use to prepare the buffer? (Assume complete dissociation of NaCN.)

Air enters a window air conditioner at 1 atm, 36oC and 75% relative humidity (??) at...

Air enters a window air conditioner at 1 atm, 36oC and 75% relative humidity (??) at a rate of 12m3/min and it leaves as saturated air at 18oC. Part of the moisture in the air which condenses during the process is also removed at 18oC. Determine (a) the rate of heat (Q?) and (b) moisture removal from the air. (c) What-if Scenario: What would the rate of heat removal be if moist air entered the dehumidifier at 95 kPa instead...

A thin plate is suspended in air at 1 atm. with T_infinite= 15°C. Air flows on...

A thin plate is suspended in air at 1 atm. with T_infinite= 15°C. Air flows on both sides of the plate where the bottom side absorbs a uniform radiative heat flux of 1542 W/m2. The plate is oriented parallel to the flow and the length along the flow direction is 60 cm. Consider the plate is negligibly thin and the width of the plate (perpendicular to the flow) is large, so that the problem can be considered as a 2D...

1. Methane and oxygen exist in a stoichiometric mixture at 500 kPa and 298 K. They...

1. Methane and oxygen exist in a stoichiometric mixture at 500 kPa and 298 K. They are ignited and react at constant volume. Combustion is complete. a. Find the heat removed from the system per kmol of fuel if the final products are at 1500 K. b. What is the final pressure? c. Explain what assumptions made in this calculation are less accurate for constant volume combustion than for the constant pressure combustion we have studied before. d. If the...

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