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.
What are the symptoms and when do they start? Symptoms of fever, poor appetite, runny nose and sore throat can appear three to five days after exposure. A blister-like rash on the hands, feet and in the mouth usually develops one to two days after the initial symptoms.