Question

Calculate the heat flow INTO the gas
1. −800 J
2. −1600 J
3. −400 J
4. +800 J
5. +1600 J
6. +400 J

Answer 1

To determine the heat flow into the gas, we need to consider the signs of the values provided. A positive value indicates heat flow into the gas, while a negative value indicates heat flow out of the gas.

Based on this:

- Options 4, 5, and 6 represent heat flow into the gas:
- Option 4: +800 J
- Option 5: +1600 J
- Option 6: +400 J

Options 1, 2, and 3 represent heat flow out of the gas, as indicated by their negative signs:

- Option 1: −800 J (heat flow out)
- Option 2: −1600 J (heat flow out)
- Option 3: −400 J (heat flow out)

Therefore, the heat flow INTO the gas can be:

**+800 J, +1600 J, or +400 J**.