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To study the role of water in showing acidic properties

When solid oxalic acid dissolved in water, it dissociates ,  H+ - ions is formed, so acidic properties can be observed.

Explanation:

When solid oxalic acid dissolved in water, it dissociates ,  H+ - ions is formed, so acidic properties can be observed.

C2H2O4 ----> +

When oxalic acid is solid, there are no free moving H+ - ions , so acidic properties can not be observed.

11 players on a field that has a maximum of 11 players

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer