An Erlenmeyer flask is placed on a digital scale with 10 grams of baking soda and 15 grams of vinegar. The scale reads 25 grams. The chemical reaction is allowed to finish, but the scale now shows less mass than at the start. Why does this demonstration fail to show the law of conservation of mass? What could you do to make sure the law of conservation of mass is shown?

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explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

93.2 ml + 3920 ml = 4013 ml total  

(93.2 ml) * (2.03 m) / (4013 ml) = 0.0471 m

the volume in in l of the diluted solution would be 0.0471 m.

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