Explanation: Water is capable of dissolving a variety of solutes in it so called as universal solvent.
It has the ability to dissolve solutes more than any other liquid. It is a very essential component of earth because water flows and carries many nutrients and minerals dissolved in it.
It is due to its chemical composition that allows it to do so.It has a polar arrangement of oxygen which provides negative charge and hydrogen molecules provides positive charge.
This provides water the ability to dissolve many solute particles in it.
Because water is able to dissolve in many things and most of this world is made out of water so no country or state doesn't have water, some have infected water with lead in them and others don't, but water can dissolve in salt, that's why they call it salt water and also tapped water where u put some mixtures in them to make it have flavor.
To do this problem it is necessary to take into account that the heat given by the unknown substance is equal to the heat absorbed by the water, but considering the correct sign:
Clearing the specific heat of the unknown substance:
