During a chemical reaction, an iron atom became the ion Fe2+. What happened to the iron atom? It gained electrons and was oxidized. It gained electrons and was reduced. It lost electrons and was reduced. It lost electrons and was oxidized.

What is the subscript for oxygen in its molecular formula

Explain what happens at the saturation point when adding salt to water at room temperature.

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]