Put water in it and the salt will dissolve and the sand will stay at the bottom
So they can tell what exact species it is.
Mole is mass (g) / Molar mass (mole/gram)
So to find mass in gram multiply the no.mole by Molar mass
The answer is (2). Heat always flows down the temperature gradient, from high temperature to low temperature. Therefore, since the person is the warmest, heat flows from the person to both the ice and the air. Additionally, since the air is warmer than the ice, heat flows from the air to the ice.
B. Rotten orange is the correct answer. Hope this helps!
