Please calculate the amount of energy it will take to change 20.0 grams of Water from -3oC all the way to vapor (100oC) at sea level. Show all your work for credit.
1. heat of fusion of water = 334 J/g
2. heat of vaporization of water = 2257 J/g
3. specific heat of ice = 2.09 J/g·°C
4. specific heat of water = 4.18 J/g·°C

passing a magnet thought the

mixture , because iron gets attracted to magnet .

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

the answer would be b i believe