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What is residence time of CO2?
Residence time of CO2 refers to the average amount of time a molecule of CO2 remains in the Earth's atmosphere before being removed by natural processes. It is estimated to be around 4 to 5 years.
What is the formula for calculating residence time?
the hydraulic residence time t is given by t=V/q where V is the volume in the tank and q is the volumetric flow rate. A theoretical residence time can be given by the relationship between concentration and time ln(C)=-(t/tav) where tav in this equation is the residence time.
What is Difference between residence time and space time?
Residence time is the time it takes a particle to complete the cycle. Space time is volume of the reactor over the velocity. If the volume does not change and the velocity remains constant then Residence time = space time, however, if there is a disturbance in the reactor (i.e., change in pressure, temp, ect.), then residence time does not equal to space time.
In which reservoir does a water molecule spend the most time?
A water molecule spends the most time in the ocean reservoir, as oceans hold the largest volume of water on Earth.
If the white molecule is water where is the water concentration greatest at first?
If the white molecule is water, the water concentration is greatest in the area where the water molecules are most densely packed. Typically, this would be in a region with a high volume of water, such as a body of water or a solution. Over time, if there is a concentration gradient, water will move from this high-concentration area to areas of lower concentration until equilibrium is reached.
How do you calculate the residence time of water in a given system?
To calculate the residence time of water in a system, you divide the total volume of water in the system by the rate at which water enters or exits the system. This gives you the average amount of time a water molecule stays in the system before leaving.
What is the residence time of water in air?
The residence time of water in air is typically around 9 days. This means that, on average, a water molecule will remain in the atmosphere for about 9 days before either being deposited back onto the Earth's surface as precipitation or being absorbed by vegetation.
Residence time of water molecule in the ocean is---?
Residence time of water molecule in the ocean is estimated to be 3000 years. This answer is wrong because this question was asked in exam for the post of junior engineer and the options were- a) 3.5 year b) 3.5 million years c) 35 years d) 35000 years So answer is one from the above..
What is residence time of CO2?
Residence time of CO2 refers to the average amount of time a molecule of CO2 remains in the Earth's atmosphere before being removed by natural processes. It is estimated to be around 4 to 5 years.
What is the residence time of water in the atmosphere?
The residence time of water in the atmosphere is around 9 days on average. This means that water molecules remain in the atmosphere for about 9 days before returning to Earth as precipitation.
What is the average residence time of particles in a given system?
The average residence time of particles in a system is the average amount of time a particle stays within that system before leaving.
Average residence time?
The average residence time is a measure of the time it takes for the total stock or supply of the material to be cycled through a system. To compute the average residence time (T; assuming constant size of the system and constant rate of transfer), we take the total size of the stock (S) and divide it by the average rate of transfer (F) through the system: T=S/F. Example if a reservoir holds 100 million cubic meters of water, and both the average input from streams entering the reservoir and the average output over the spillway are 1 cubic meter per second, then the average residence time for a cubic meter of water in the reservoir is 100 million seconds, or about 3.2 years.
How do you calculate the residence time of water in a lake?
The residence time of water in a lake is calculated by dividing the volume of water in the lake by the rate at which water flows into or out of the lake. This helps determine how long water typically stays in the lake before being replaced.
How long does a water molecule spend in a cloud?
The amount of time a water molecule spends in a cloud, known as its residence time, can vary depending on several factors, including weather conditions, cloud type, and atmospheric dynamics. On average, a water molecule remains in a cloud for about 9 to 10 days before it precipitates out as rain, snow, or ice.
What is the formula for calculating residence time?
the hydraulic residence time t is given by t=V/q where V is the volume in the tank and q is the volumetric flow rate. A theoretical residence time can be given by the relationship between concentration and time ln(C)=-(t/tav) where tav in this equation is the residence time.
What is Difference between residence time and space time?
Residence time is the time it takes a particle to complete the cycle. Space time is volume of the reactor over the velocity. If the volume does not change and the velocity remains constant then Residence time = space time, however, if there is a disturbance in the reactor (i.e., change in pressure, temp, ect.), then residence time does not equal to space time.
Can you provide an example of residence time in a chemical reactor?
Residence time in a chemical reactor refers to the average time a substance stays inside the reactor. For example, if a chemical reaction takes 10 minutes to complete in a reactor with a volume of 100 liters, the residence time would be 10 minutes.
