atmosphere in a sealed space craft contains
a) pure oxygen
B) a mix of oxygen and nitrogen
c) a mix of oxygen and carbon dioxide
d) pressurized atmospheric air available normally on earth

Question

atmosphere in a sealed space craft contains 
a) pure oxygen
B) a mix of oxygen and nitrogen
c) a mix of oxygen and carbon dioxide
d) pressurized atmospheric air available normally           on earth

anonymous · Answer

its b) a mix of oxygen and nitrogen

anonymous · Answer

because only excess of oxygen can cause of explosion...so it is neccesary the mixture of nitrogen and oxygen.

anonymous · Answer

well it should be oxygen and carbon dioxide coz even in oxygen cylinders in hospitals have 1% co2 because of some reason

stormfire1 · Answer

The atmosphere on space craft is made of nitrogen and oxygen in the same approximate percentages as here on earth. There are two reasons for this: 1) having a higher concentrations of oxygen (> 22%) creates an extremely explosive atmosphere and 2) the human body will experience oxygen toxicity over time when exposed to higher concentrations of oxygen. http://science.howstuffworks.com/space-shuttle4.htm http://en.wikipedia.org/wiki/Oxygen_toxicity