Is it possible to indicate the amount of gas inside a cylinder ?

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

Why can't make aluminum nitride film successfully by use sputter?

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Is there any test to determine the cardiovascular risk of patients with obesity? from the perspective of obesity?

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Why are the velocities so high in my Boussinesq approximation Fluent simulation?

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Why almost every element would be metallized in sufficiently high pressure and low temperature?

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02 March 2021 3,309 2 View

Sutter electrode holder leaking after applying positive pressure. How to fix?

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02 March 2021 5,829 1 View

What SPSS analysis should I run with one IV (with two levels) and two DVs?

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01 March 2021 8,235 2 View

How much pressure we can reduce at the outlet to avoid Reverse Flow?

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Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

Necessary tube lenght to cool Natural gas in a dry-ice cooling bath?

I have a tank which contains natural gas at 250 Bar and 293 Kelvin. I want to cool the gas in a dry-ice cooling bath to about 195 Kelvin. The gas will flow in a copper-tube through the bath with a...

27 February 2021 8,128 1 View

Sverre Gullikstad Johnsen

If you know the volume (V) of the cylinder and meassure the pressure (P) and temperature (T) you may calculate the number of moles from an Equation of State.

E.g., from the ideal gas law you would get n=PV/(RT), where n is the number of moles of gas and R is the universal gas constant.

Elsaid Elashry

I agree with Sverre Gullikstad Johnsen

Phil Denby

You could use sound or ultrasound... the speed it travels through the cylinder will depend on the density of whats inside. Or look for the resonant frequency of the cylinder.