Materials Balance question for assignment. Help needed.

In summary, the conversation is about a person seeking help with two questions related to natural gas and a steam tank. The questions involve calculating the percentage of CO2 absorbed and excess air used in the burning of natural gas, and determining the heat transferred, final temperature, and amount of steam condensed in a tank cooling process. The person is seeking assistance with these questions and asks for specific issues or questions to be addressed.
  • #1
thaias
1
0
Hi guys, I'm currently doing an assignment which seems to be beyond my knowledge and would like to ask for some helps. There are 2 questions I am currently stuck on:
1]

A natural gas analyzes CH4, 80.0 percent and N2, 20.0 percent. It is burned under a boiler and most of the CO2 is scrubbed out of the flue gas for the production of dry ice. The exit gas from the scrubber analyzes CO2, 1.2 percent; O2, 4.9 percent; and N2, 93.9 percent. Calculate the
(a) Percentage of the CO2 absorbed.
(b) Percent excess air used

and

2]A 10.0 m3 tank contains steam at 275°C and 15.0 bar. The tank and its contents are cooled until the pressure drops to 1.2 bar. Some of the steam condenses in the process.

a) How much heat was transferred from the tank?
b) What is the final temperature of the tank contents?
c) How much steam condensed (kg)?

(Use the steam table provided below).

Any help would be greatly appreciated. Thanks!
 
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  • #2
So what are the issues? We don't do peoples homework here on physics forums, you need a specific issue or question!
 

1. What is a materials balance question?

A materials balance question is a type of problem that involves the calculation of the amount of material entering and leaving a system, as well as the amount of material accumulating within the system. It is commonly used in chemical engineering and other fields to analyze and optimize processes.

2. Why is materials balance important?

Materials balance is important because it allows us to track and understand the flow of materials within a system. This information is crucial for process optimization, waste reduction, and resource conservation.

3. How do you approach a materials balance question?

The first step in approaching a materials balance question is to clearly define the system boundary and identify all the inputs and outputs. Next, you will need to determine the mass or volume of each input and output, and account for any accumulation or loss of material within the system. Finally, you can use this information to solve for the unknown quantities.

4. What are some common challenges when solving a materials balance question?

Some common challenges when solving a materials balance question include inaccuracies in measurements, assumptions made in the calculations, and variations in material properties. It is important to carefully consider these factors and double-check your work to ensure accurate results.

5. Can materials balance be applied to real-life situations?

Absolutely! Materials balance is a fundamental concept in many industries and is used to solve real-life problems related to resource management, pollution control, and process optimization. It is a valuable tool for understanding and improving various systems and processes.

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