A student mixes 20 \(g\) of a metal with 166 \(g\) of dilute acid.
During the reaction, 4 \(g\) of hydrogen gas escapes because the container is left open.
What will be the measured mass after the reaction?
Total mass before reaction = \(g\)
Mass of Hydrogen gas that escaped = 4 \(g\)
Total mass after reaction = \(g\)