Which represents the balanced double displacement reaction between sodium chloride (na+cl-) and copper sulfate (cu2+(so4)2-) ?

nacl + cu(so4) --> na2(so4) + cucl2

nacl + cu(so4) --> na(so4) + cucl

2nacl + cu(so4) --> na2(so4) + cucl2

nacl + cu(so4) --> cl(so4) + nacu

The balanced double displacement reaction is as follows.

Explanation:

The given reactant has sodium,chloride and copper sulfate ions.

In the double displacement reaction, two ionic compounds exchange their cations.

Sulphate and chloride ions are cations these are exchanged sodium and copper elements.

Hence, the balanced double exchange reaction is as follows.

calculate how many grams of ammonia can be produced from 4.21 grams of

n2 + 3h2 = 2nh3

my answer:

25.0g n2 x (1 mol/ 28.0gn2) x (2 mol nh3/ 1 mol n2) x (17.0g nh3/ 1 molnh3) = 30.36g n2

25.0g h2 x (1 mol h2/ 2.00g h2) x (2 mol nh3/ 3 mol h2) x (17.0g nh3/ 1 mol nh3) = 141.67g h2

lr = n2