At what rate would oxygen concentration in the gas within the international space station decrease if the system for the electrolytic generation of oxygen failed? Give your answer as mole fraction per day. How many days would it take after the failure for the oxygen in the ISS to fall to 15% assuming it starts at 21%?

Q: Long-term space missions require reclamation of the oxygen in the carbon dioxide exhaled by the…

A:

Q: At present, a typical temperature at the very top of the troposphere is −53.2°C. (a) Convert this…

A: The given data is, Temperature = -53.2°C

Q: What is the maximum theoretical mass of Compound  C  that CapeChem could ship each week?

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Q: 0.631 g sample potassium reacts with excess amounts of hydrochloride acid and it was collected over…

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Q: b) Calculate the stoichiometric fuel/air mass ratio and product gas composition for the combustion…

A: Hexane is a hydrocarbon consisting of 6 carbon atoms whose combustion leads to the formation of…

Q: In today’s experiment, a combination reaction of magnesium and oxygen is used to determine the…

A: Formation of magnesium nitride is other competitive reaction.

Q: Describe the composition of the atmosphere in terms of the major components in dry air at sea level?

A: The charged or neutral particles combining together to form earth atmosphere is called its…

Q: Enter your answer in the provided box. The concentration of SO₂ in the troposphere over a certain…

A: In the given question we have to calculate the pH of Rain water, First of all, we have to calculate…

Q: Explain the different mechanisms by which ozone is formed in the troposphere as a pollutant and in…

A: Ozone in the stratosphere protects us from the Sun's harmful ultraviolet rays. However, ozone in the…

Q: The chemical reaction from two chemicals resulted in a waste product which is composed of an oxygen…

A:

Q: b) If a steam reforming line processes methane at a temperature of 725.0°C and a pressure of 12.00…

A: Ideal gas equation is given by, PV=nRT where P is the pressure, V is the volume, n is the number of…

Q: Some pollutants are difficult to break down and therefore accumulate in the environment. These are…

A: Pollutants are compounds in which pollutes the environment. They are toxic to living beings.…

Q: Long-term space missions require reclamation of the oxygen in the carbon dioxide exhaled by the…

A: Given that : The mass of carbon dioxide exhaled by one astronaut = 1.25 kg per day The volume of…

Q: Explain the relation between air pollution and environmental chemistry.

A: Air pollution and environment chemistry is directly proportional to each other.

Q: Given that the total concentration of molecules in air decreases with increasing altitude, would you…

A:

Q: Explain the relevance of the 1987 Montreal Protocol and its 2016 Kigali Amendment on regulating…

A: Unlike the Vienna Convention, the Montreal Protocol lays down legally binding and measurable…

Q: One of relatively few reactions that takes place directly between two sollds at room temperature is…

A: For a balanced reaction number of atoms of each element must be equal on both sides.   Given :  Mass…

Q: Methyltetrol sulfate was one of the most abundant compounds found over Lake Michigan during this…

A: Given that Methyltetrol sulfate in 1 m3 air = 87 ng  i.e. mass of methyltetrol sulfate = 87×10–9 g…

Q: Please help me to measure the volume of hydrogen gas in this eudiometer

A: A question based on properties of gas. An image of the Hydrogen gas filled in eudiometer is…

Q: More ozone is found in the stratosphere than the troposphere. Why is this?

A: The tropospheric zone is found in between earth surface and stratosphereic zone holds the other 10%…

Q: ow much of anthropogenic carbon is taken up by the oceans

A: Given How much of anthropogenic carbon is taken up by the oceans

Q: s) of the Sun's energy, 25% is reflected from the atmosphere, 23% is absorbed by the aimosphere, and…

A: We have to determine the % of energy absorbed by the earth.

Q: The cation exchange for Zinc (Zn*2) in soil is 29.4 mEq per 100 grams of soil. Determine the mass of…

A: Cation exchange capacity (CEC) is the total capacity of a soil to hold exchangeable cations. It…

Q: If p50 = 3.1 torr for elephant Mb (myoglobin) and p50 = 5.1 torr for zebra Mb, please pick ALL of…

A: The correct statements are: Elephant Mb binds oxygen more tightly than zebra Mb, since the p50 value…

Q: Challenger

A: The challenger lost its control due to external tank explosion and the space shuttle was destroyed…

Q: Helloooo, please help. What is the cost per kilogram of Na if the complete cost to produce 123…

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Q: Dinitrogen monoxide (N₂O; nitrous oxide) is a greenhousegas that enters the atmosphere principally…

A: Isotopes possess same number of protons but differ in number of neutrons thus, they have different…

Q: The overall cause of ozone depletion is associated with the presence of chlorofluorocarbons and…

A: The ozone in the atmosphere reacts with the chlorofluoro carbons to form the oxygen through…

Q: Write the two reactions that contribute most significantly to ozone destruction in the stratosphere…

A: Ozone layer is important as it absorbs harmful ultraviolet B rays because UV-B radiation causes skin…

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Q: If a 32 g bar of chocolate was completely combusted (to CO2 and H2O) with a stoichiometric…

A: Combustion of chocolate in presence of oxygen will show reaction like this C45H66O9 + O2 -> CO2 +…

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Q: A 19.0-m by 7.0-m by 3.0-m basement had a high radon content. On the day the basement was sealed off…

A: To calculate the number of 222 Rn isotopes (atoms) at the beginning and end of 28 days, we need to…

Q: As of the writing of this text, EPA standards limit atmospheric ozone levels in urban environments…

A: Given that Area covered by the air above Los Angeles = 4000 sq. miles = 1.036 x 1010 m2 . and height…

Q: For calculations of gas volume given the reaction takes place at STP why do I have to use Moles=…

A: Ideal Gas Law :-  PV = nRT  P is the pressure of gas  V is the volume occupied by gas n is the…

Q: O3 is produced in the troposphere through the photochemical oxidation of NO2. The photolytically…

A: O3 is produced in the troposphere through the photochemical oxidation of NO2. The photolytically…

Q: What are the differences between cryo-SPA Vs cryo-ET techniques and their advantages and…

A: Cryo techniques are a group of related procedures for stabilizing specimen or fixing for microscopic…

Q: Give a brief awnser to: What is the reasoning behind natural global warming?  What is the reasoning…

A: reasoning behind natural global warming:  1. Forest Fires Deforestation by nature is the main cause…

Q: a) Suggest 2 mitigation methods for improving the indoor air quality of the hospital. b) Based on…

A: A valid approach to reducing the air pollution effects on the environment and human health is…

Crystallography

Crystallography is the category of science that focuses on the atomic and molecular arrangements with their bonding constituting the crystal structure. It is derived experimentally and originated in the year 1912. It is a combination of two words; those are crystal, meaning a cold drop, and graph, meaning writing.