Station Math

Two station astronauts will each perform two 8-hour EVAs within 13 days to repair a damaged solar panel that was impacted by a micrometeoroid on the space station. What is the total amount of oxygen needed by the two astronauts to accomplish this? Please put your answer in kg units.
Background information: Each EMU contains 0.54 kilograms of oxygen and has oxygen tanks (similar to scuba diving tanks) that work with a carbon dioxide removal system to allow one 6-hour to 8.5-hour spacewalk. Without the ability to remove carbon dioxide, the oxygen in the tanks would run out more quickly, because much would be tied up in exhaled gas. The amount of oxygen consumed, and carbon dioxide produced by a crewmember is dependent on his/her metabolic rate.

If I am correct, you should just have to multiply the amount of oxygen a single EMU contains by two for both 8-hour EVAs. Then multiply that answer by two for both astronauts.

To find the total amount of oxygen needed by the two astronauts, we will need to calculate the oxygen consumption per astronaut per EVA and then multiply it by the number of EVAs.

1. Oxygen Consumption per Astronaut per EVA:
Each astronaut will perform two 8-hour EVAs, so the total time per astronaut will be 2 * 8 = 16 hours.

If each EMU contains 0.54 kilograms of oxygen and is designed to last for 6 to 8.5 hours of spacewalk, we can take the average of the two values (7.25 hours) as a representative value.

Now, we can calculate the oxygen consumption per astronaut per EVA:
Oxygen Consumption = (0.54 kg / 7.25 hours) * 16 hours
Oxygen Consumption = 1.20 kg

2. Total Amount of Oxygen needed by the two astronauts for two EVAs:
Since each astronaut requires 1.20 kg of oxygen per EVA, the total amount of oxygen for both astronauts will be 2 * 1.20 kg = 2.40 kg.

Therefore, the total amount of oxygen needed by the two astronauts to accomplish the repairs is 2.40 kg.