Choose all the answers that apply. Check the statements that are true.

- A hypothesis must be proven true in order for an experiment to be valid.
- Electrons and protons are examples of cycles.
- A valid experiment must have results that can be repeated.
- Observations are the final stage of an experiment.
- Science is based on fact

Select all that apply

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon