Take a large pot, Go outside fill it with snow and boil the water, add snow as needed.
Answer:
i think its C, but im not 100% sure. if not c, then D, but C sounds more right.
Explanation:
everything else sounds like sure fire sighs of a chem change. good luck
Answer:
The heat that must be supplied is 298.1 kJ
Explanation:
We must apply the calorimetry formula to solve this.
Q = m . C . ΔT
where Q is heat, m is the mass, C is the specific heat and ΔT the difference between Final temperature and Initial temperature.
The normal boiling point of water is 100° so ΔT = (100° - 20°)
Notice that units in specific heat are J/ g.K so temperature should be in K but in this case K and C are the same, because it is a difference.
T°K = T°C + 273
ΔT = (100° - 20°) = 80°
ΔT = (373° - 293°) = 80°
750g . 0.51 J/gK . 80K + 800g . 4.18 J/gK . 80K = 298120 J
The piece of metal is unaffected, it hasnt changed elements or react in a way that would change the general make-up of the metal.
Simple terms: its still a piece of metal, just bent in half (ू• ౪•ू ) hope this helped!