density of natural gas there is no one correct starting sea level density of natural gas since natural gas densities vary depending on where the gas was obtained gas from the north sea russia or shale gas will all have different densities typically in the range of 0 7 to 0 9 kg m3
A. It takes approximately 24-48 hours for initial symptoms to appear after exposure to the influenza virus. If you suspect you have the flu, seek medical treatment quickly.
A better treatment for prevention of flu after exposure and/or reduction in severity and duration of symptoms, could be Tamiflu. Check with your health care professional if you think you have been exposed, to be most effective, the anti-viral medicines should be taken in the first 40 hours after exposure.f you've been exposed you may not show symptoms for up to 7 days. Most people typically get symptoms within 3 to 5 days following exposure. The same holds true for the season â¦ al flu or colds. + 17 others found this useful.