Question

If you know that the mass of the water bottle is 250g and the mass of the Alka-Seltzer is 3.5g, how much should the mass be when you combine them?

Answer 1

as the law of conservation of mass says that mass is neither created nor destroyed in chemical reactions.

So when we add masses of Water and Alka-seltzer,

250g+ 3.5g = 258.5g

WHEN WE COMBINE WE GET 285.5.g

Answer 2

Answer:

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As an Alka-Seltzer tablet dissolves in water, it liberates carbon dioxide. The carbon dioxide dissolves in the water and then comes out of solution as a gas. This carbon dioxide gas has mass, but since it is a gas it escapes from the container and diffuses into the atmosphere.so mass remain same as usual as mass is conserved during reaction

Total mass = mass of water+ mass of alka-shltzer

= 250g+3.5g

= 253.5g