This is an experiment
Step1: bring a bottle and fill one third of it with water
Step2: see the mass or the weight of bottle with the cap of it and with one eight of (Alka-Seltzer Tablet) is type of tablet which reacts with water
Step3:so after you measured the mass of everything place the tablet in the bootle that is filled with water,
After you put the tablet, directly close it very tight and measure the mass again
And later answer the following questions
So Question:1) says what happened inside the bottle after you’ve done this and did the mass or the weight of the bottle changed and it’s continent
Question:2) Later it says the cap of the bottle try to loosen it a little and slowly, and say if you heard any sound
After that measure the mass of it again