[DOC] [TLE] science based - Deadly, Heavier than Air Gas - Worldbuilding Stack ... [PAR] Apr 20, 2015 ... company blog ... In a given fantasy world, I need a deadly (yet not magical) gas 
that will naturally .... While methane is lighter than air, ethane is heavier, colorless
, odorless and ... BTW, I am a volcanologist and work in caves with CO2 up to 3%. 
.... NO2 or nitrogen dioxide is toxic, heavier than air and visible... [DOC] [TLE] Gases  heavier or lighter than air.pdf [PAR] whether some common gases are heavier or lighter than air: ... The toxic gas 
carbon monoxide is CO, weight 12 + 16 = 28, very slightly less dense than air ... 
C3H8, weight 12 x 3 + 8 = 44, the same as carbon dioxide and also heavier than 
air. [DOC] [TLE] Consider toxic gas density when positioning a gas monitor [PAR] Jun 1, 2006 ... When selecting a portable gas meter to measure toxic vapors, many people ask 
whether the gas they are measuring is "heavier" or "lighter" than air. The 
assumption is ... Avoid CO poisoning when using gas-powered tools... [DOC] [TLE] Characteristics of Toxic Gases, Service, Support, Crowcon Detection [PAR] Arsine. 2.7. ASH3. Arsine is a colourless, flammable, and highly toxic gas. ... CO. 
Carbon monoxide, which is odourless and colourless, is the most abundant ... 
Diborane is lighter than air and exposure may result in skin, respiratory, and eye
... [DOC] [TLE] Lighter than air - Wikipedia [PAR] It has been suggested that Lifting gas be merged into this article. (Discuss) 
Proposed since August 2014. Lighter than air refers to materials (usually gases) 
that are buoyant in air because they have ... g/L at STP, average atomic mass 
28.00 g/mol) is about 3% lighter than air, insufficient for common use as a lifting 
gas. [DOC] [TLE] Suppose a tank of carbon gas in a hospital has a leak. Will the gas ... [PAR] Will the gas be found near the floor or near the ceiling? ... In fact, very few gasses 
are lighter then air when they are at the same ... near the floor to detect any leak 
quickly before it can reach dangerous levels. ... This is because CO2 is more 
dense than air (about 2.0 kg/m3 for CO2 compared to about 1.2 kg/m3 for air, at a
... [DOC] [TLE] Ammonia Gas Detection [PAR] GT3000 electrochemical gas detector applied to ammonia-gas safety. NH. 3. 
Anhydrous ... In a controlled environment, ammonia gas is lighter than air and 
thus will rise and ... Figure 1. GT3000 electrochemical toxic gas detector. ... Other 
company, product, or service names may be trademarks or service marks of 
others. [DOC] [TLE] Basic Natural Gas Safety | O&G Exploration & Production | Energen [PAR] Natural gas (methane) is neither toxic nor poisonous. ... Lighter-than-air natural 
gas (methane) should not be confused with liquefied ... Carbon dioxide (CO2) at 
room temperature and atmospheric pressure is a colorless, odorless, slightly 
acidic gas. It can exist in all three physical states (solid, liquid and gas) 
depending on... [DOC] [TLE] Is Carbon Monoxide Heavier Than Air & Other FAQs [PAR] So, to answer the question, no, it is lighter than air. You would think ... 3. Should I 
test my carbon monoxide detector with car exhaust? In a word  NO! Exhaust 
from ... It can be very harmful to your health to test a device in this way. Further ... 
A carbon monoxide detector has been built to be very specific for CO gas. It will 
not... [DOC] [TLE] Carbon Monoxide Facts and Myths. What You Need to Know About ... [PAR] Feb 22, 2013 ... CO is colorless, odorless, tasteless, and only slightly lighter than air. ... Carbon 
monoxide is not dangerous. ... The test button on common CO alarms only tests 
the battery, not the CO gas censor. ... October 10, 2016

Question: This poisonous gas, CO, is about 3% lighter than air
Answer: carbon monoxide