Which of the following instruments is used to measure air pressure

Which statement correctly describes potassium iodide, ki? there is a one-to-one ratio of potassium ions to iodide ions. potassium gains electrons and iodine loses electrons during the reaction. the lattice is held together by potassium anions and iodide cations.

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

Which compound contain an iron with a 3+ charge