Formula of precipitate HNO3(aq) + Ba(OH)2(aq) --
(s)
ZnCl2(aq) + KOH(aq) -
(s)
CuSO4(aq) + H2S(ag) -
(s)
H3PO4(aq) + Ca(OH)2(aq) +
(s)
Na2CO3(aq) + NH4Cl(aq) --
s)

Is this a single replacement reaction or there is no

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount