Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

[Q]: Respiratory acidosis is considered to be problematic because excess co2 in blood.
[A]: Why is respiratory acidosis considered to be problematic?


[Q]: The pressure of a sample of gas is measured with an open-end manometer.
[A]: The pressure of a sample of gas is measured with an open-end what?


[Q]: Rubbing your hands together warms them by converting work into thermal energy energy.
[A]:
Rubbing your hands together warms them by converting work into what energy?