Explain what is the retention time of the house

Assignment Help Chemistry
Reference no: EM13268115

Consider a house into which radon is emitted through cracks in the basement. The total volume of the house is 650 m^3 (assume the volume is well mixed throughout). The radon source emits 250 pCi/s. (A picoCurie [pCi] is a unit proportional to the amount of radon gas and indicates the amount of radioactivity of the gas.) Air inflow and outflow can be modeled as a flow of clean air into the house of 722 m^3/h and an equal air flow out. Radon can be considered conservative in this problem.

-What is the retention time of the house?
-What is the steady-state concentration of radon in the house (units of pCi/L)?

Reference no: EM13268115

Questions Cloud

What is the frequency of blue light : What is the frequency of blue light that has a wavelength of 450 nm and What is the frequency of red light that has a wavelength of 650 nm
Explain poorly treated municipal wastewater is discharged : Poorly treated municipal wastewater is dis- charged to a stream. The river flow rate upstream of the discharge point is Qu = 8.7 m3/s. The discharge occursataflowofQd=0.9m3/sandhasaBODcon- centration of 50.0 mg/L.
At what price will the bonds sell in the marketplace : Investors buying the bonds today will earn a yield to maturity of 11.02 percent. At what price will the bonds sell in the marketplace?
What is the frequency of this wave : The displacement of a wave traveling in the positive x-direction is y(x, t) = (3.5 cm)cos(1.7x - 129t), where x is in m and t is in s. What is the frequency of this wave
Explain what is the retention time of the house : Consider a house into which radon is emitted through cracks in the basement. The total volume of the house is 650 m^3 (assume the volume is well mixed throughout). The radon source emits 250 pCi/s
What would be the current market price of these bonds : A client has expressed interest in a ten-year zero coupon bonds with a face value of $1,000. His opportunity cost is 7 percent. Assuming annual compounding, what would be the current market price of these bonds? Round to the nearest dollar.
Calculate the power converted to the output torque : A 480 V permanent magnet ae motor is consuming 10 kW at power factor 0.80 lagging. Its speed is 1800 rpm. The winding resistance is 0.5 W per phase. Core losses are 100 W. Mechanical losses arc 250 W.
How might one produce liquid carbon dioxide : As the temperature of ice is increased, it changes first into a liquid and then into a vapor. How might one produce liquid carbon dioxide
What is the yield to maturity on the bonds : Generic Inc. issued bonds in 1988 that will mature 16 years from today. The bonds pay a 14.375% coupon and the interest is paid semiannually. The bonds' current price is $1,508.72. What is the yield to maturity on the bonds?

Reviews

Write a Review

Chemistry Questions & Answers

  Calculate the mass of calcium bromide formed

when 142 grams of calcium flouride are reacted with an excess of sodium bromide, calculate the mass of calcium bromide formed.

  What will the pressure be

If you have a sample of a gas at 25.0 oC and at a pressure of 4.5 atm, what will the pressure be if the temperature is raised to 50.0 oC?

  Calculate the number of moles of cl atoms

Calculate the number of moles of Cl atoms in 1.20×1024 of magnesium chloride, MgCl2.

  What is the new pressure in the bicycle tire

A bicycle tire is filled with air to a pressure of 75. psi at a temperature of 19 degrees celcius. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58 degrees celcius. The volume of the tire increases by 4.0%. What ..

  Pure colored substances mostly exhibit a single peak

Pure colored substances mostly exhibit a single peak (i.e. max) in the visible; therefore the simple rules of complementary colors apply. Mixtures are a little more complicated.

  Determine the ph of the solutions

25.00 mL of 0.1000 M chlorous acid, HOCl = O is titrated with 0.1000 M NaOH. Calculate the pH of the solutions when 0.00, 2.00 and 24.00 mL of the titrant was added.

  Explain what will be the equilibrium partial pressure of no2

Given the initial concentrations of 0.10 atm NO2 and 0.10 atm N2O4 in a 1.0 L flask, what will be the equilibrium partial pressure of NO2? N2O4(g) ? 2 NO2(g) Kp = 0.660 at 319 K

  What is the value of the ionization constant

A 0.300 M solution of an acid, HZ, has a pH = 1.301. What is the value of the ionization constant, Ka, for this acid?

  What is the value of delta h for the reaction

According to the data, what is the value of delta H for the reaction.

  How many ml of the base are required

50.50 mL of 0.116 M HF is titrated with 0.1200 M NaOH. How many mL of the base are required to reach the equivalence point? (Ka for HF is 6.8 x 10-4)

  Explain the formula of tris is edta''s fw

how would you make a 500 ml solution that is 10mM Tris, 2mM EDTA. The formula of Tris is 121.1, EDTA's FW is 187

  Define the solubility of organic compounds

A general statement concerning the solubility of organic compounds is: The smaller molecules dissolve best in a solvent with a low molecular weight.

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!

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