Which of the following is a synthesis reaction? agno3 + nacl → agcl + nano3 bao + h2o → ba(oh)2 so3 + h2o → h2so4 cu + agno3 → ag + cuno3

Answer : The synthesis reaction are,

Explanation :

Synthesis reaction : It is a type of combination reaction where the two or more  reactants combine to form a single product. In this reaction, reactant may be an element or compound and product is always compound.

From the given reactions, we conclude that

These two reactions are the example of synthesis reaction.

While,

is a double displacement reaction in which the cation and anion of two different reactants exchange their places to give two different products.

And,

is a single replacement reaction in which the most reactive metal displaces the least reactive metal form its solution.

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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