How do scientist gather data to find reliable answers to questions?

The melting point of sulfur is 115 °c and its boiling point is 445 °c. what state would sulfur be in at 200 °c?

Answer asap need by wednesday morning calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 best answer will be brainliest

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.