Why do stars have different sizes?
But for all other stars, their sizes are determined by that simple balance: the force from the outward radiation, at the surface, has to equal the inward pull of gravitation. Larger radiation forces means the star swells to larger sizes, with the largest stars of all swelling to billions of kilometers.
Which is the most poisonous gas in the world?
Among the best known toxic gases are carbon monoxide, chlorine, nitrogen dioxide and phosgene….List.
| Chemical name | Chlorine |
|---|---|
| CAS number | 7782-50-5 |
| LC50 toxicity in ppm | ACGIH (1986) STEL-TLV 1ppm |
| NFPA 704 Health Rating | 3 |
Which is the most powerful poison in the world?
Botulinum toxin
Which gas is dangerous?
Acutely Toxic Gases
| Name | CAS# |
|---|---|
| arsenic pentafluoride | 784-36-3 |
| arsine | 7784-42-1 |
| boron trifluoride | 7637-07-2 |
| chlorine | 7782-50-5 |
What is the most deadly chemical weapon?
Watch Out! Here Are the Five Most Dangerous Chemical Weapons
- Most toxic: VX.
- Most recently used: Sarin.
- Most popular: Mustard Gas.
- Most dangerous: Phosgene.
- Most attainable: Chlorine.
How much novichok will kill you?
The median lethal dose for inhaled A-230, likely the most toxic liquid Novichok, has been estimated as between 1.9 and 3 mg/m3 for two minute exposure. Thus the median lethal dose for inhaled A-234 is 0.2 mg (5000 lethal doses in a gram) and is below 0.1 mg for A-230 (10 000 lethal doses in a gram).
How does novichok kill you?
What is Novichok and what are the symptoms? Novichok is a highly toxic nerve agent that slows the heart, paralyses the muscles used for breathing and — if the dose is big enough — can lead to death by asphyxiation. A smaller dose may result in seizures, neuromuscular weakness, liver failure and other damage.
How do chemical weapons kill you?
The second category is nerve agents, like sarin, or VX. These are nerve agents because they stop the activity of one enzyme associated with our muscles. So all the muscles will cramp, including the lungs, or the muscles that are controlling them, so people die from suffocation. The mortality rate is very high.
Are chemical weapons still used today?
The use and possession of chemical weapons is prohibited under international law. However, several nations continue to maintain active chemical weapons programs, despite a prevailing norm against the use of chemical weapons and international efforts to destroy existing stockpiles.
Which country has the most chemical weapons?
Russia
What countries have biological weapons?
What Countries Have Them? Only 16 countries plus Taiwan have had or are currently suspected of having biological weapons programs: Canada, China, Cuba, France, Germany, Iran, Iraq, Israel, Japan, Libya, North Korea, Russia, South Africa, Syria, the United Kingdom and the United States.