Why does a closed system allow for more reliable measurements than an open system when observing a chemical reaction? A closed system conserves all of the product, allowing for an accurate measurement of its mass.
A closed system allows for some of the product to release into the area around the system, allowing the product to expand into all available space.
A closed system allows the activation energy to be reached more quickly.
A closed system allows the reaction to be viewed, increasing the possibility of seeing physical changes.