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What is the Threshold limit value for methane gas?
Methane (Natural Gas) gas exposure limit - 500ppm See the link below.
What is a formula for sodium hydrogen sulfide?
The formula for dihydrogen sulfide, or just hydrogen sulfide, is H2S. A pair of hydrogen atoms are bonded to a sulfur atom to make up this toxic compound. A link can be found below for more information.
Is the compound h2s an acid?
It is known as hydrosulfuric acid. Not to be confused with sulfuric acid which is H2SO4
What does H2s positive mean?
H2S positive bacteria are able to metabolise sulfurhydrogen.
Why is there a lower limit to temperature but not an upper limit?
lower limit because the particles have zero energy. there is no upper limit because particles can move as fast as they like. There is an upper limit on temperature, called "Planck Temperature". It is approximately 1.42e32 Kelvin! This temperature is the maximum temperature something can attain, with the physics we understand.
What is the lel of h2s?
The H2S auto explosive limit between (4.3 - 46)%,this called explosive mixture for hydrogen sulfied.
What is the exposure limit to LEL?
The exposure limit to Lower Explosive Limit (LEL) varies depending on the specific substance. It is usually expressed as a percentage of the gas or vapor in the air concentration that presents a potential explosion hazard. It is important to refer to the Material Safety Data Sheet (MSDS) or other relevant safety guidelines for specific exposure limits for different substances.
What is the exposure limit for asbestos?
In the US, the occupational exposure limit for airborne asbestos is 0.2 fibers per cubic centimeter of air.
What is PEL and its limits?
Permissible Exposure Limit
What is the permissible exposure limit for lead?
The permissible exposure level of lead is 50ug/m3.
What is the lower heating value of hydrogen sulfide?
Hello. Can you assist me with the calorific value of H2S and CH4 and a reference to that information? Thank you
What is the upper and lower limit of 20?
Twenty one is the upper limit and nineteen is the lower limit of twenty.
What do the letters STEL stand for in a safety data sheet?
There are multiple acronyms for STEL. The primary acronyms for STEL are: Short Term Exposure Level, Short Time Exposure Limit, Short Term Exposure Limit, Solar Terrestrial Environment Laboratory, and Stand for Threshold Limit.
Why lead acetate cotton used in limit test of aresenic?
TioAbsorb the H2S Gas produced during the test raction.
What is the upper limit and lower limit?
write a function which computes product of all the number in a given range(from lower limit to upper limit) and returns the answer
What is the Permissible Exposure Limit for hydrochloric acid?
The Permissible Exposure Limit (PEL) for hydrogen chloride (the gaseous form of hydrochloric acid) is 5 ppm, or 7 mg/m3, as a ceiling limit. This limit applies to airborne vapor concentrations, not to skin contact with a liquid form of this material.
How many moles of hydrogen sulfide are contained in a 64.6-g sample of this gas?
H2S 63.1 g H2S * 1 mol H2S / 34.076 g H2S = 1.85 mol H2S
