When the compound, ca(no3)2, is mixed with water, the ca(no3)2 is:

soluble because all ca+2 compounds are soluble in water

insoluble because most ca+2 compounds are insoluble in water

soluble because all no3−1 compounds are soluble in water

insoluble because no3−1 compounds are usually insoluble in water

The answer t your question is below:

Explanation:

When a salt is mixed with water, it will form ions, these ions are soluble in water.

Example:    Ca(NO3)2    ⇒    Ca⁺²     +    2 NO₃⁻¹

Both Ca⁺² and NO₃⁻¹ are soluble in water.

Then the answer to your question is:

Soluble because all Ca+2 compounds are soluble in water

Soluble because all NO3−1 compounds are soluble in water

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.