Maybelline Cousteau’s backup oxygen tank reads 900 kPa while on her boat, where the temperature is 27oC. When she dives down to the bottom of an unexplored methane lake on a recently-discovered moon of Neptune, the temperature will drop down to –73oC. What will the pressure in her backup tank be at that temperature?

The oxygen tank blew up and she hardly survived the tremendous air pressure released into the methane lake. She later died of hypothermia, though that's what they say happened. Some rumor that there was a lot of movement down below and even caught a glimpse of a purple spike surfacing briefly. Could it be alien life?

Also how far in the future is this i love sci fi stuff. Itll take decades to get to that moon orbiting Neptune with modern technology. Imm estimate that this year is 2250.