Answer:
geologic features like craters and mountains
Explanation:
Answer:
The ice will not melt, and the temperature will remain at 0°C.
Explanation:
The reaction of the sodium in water is exothermic because heat is being released. In an isolated system, the change in heat must be 0, so the released heat must be absorbed by the ice.
The molar mass of Na is 23 g/mol, so the number of moles that reacted was:
n = 0.250 g/ 23g/mol
n = 0.011 mol
By the reaction:
2 moles ------- -368 kJ
0.011 mol ----- x
By a simple direct three rule:
2x = -4.048
x = -2.024 kJ/mol
So the ice will absorbs 2.024 kJ/mol, which is less than the necessary to melt it (6.02 kJ/mol). Then, the ice will not melt.
The temperature of a pure substance didn't change until all of it has changed of phase, so the temperature must remain at 0°C.
Explanation:
the above process is done in very detail .
hope this is helpful.
Answer:
A mixture is a physical combination of substances thus it only requires physical processes to separate. However, a compound is chemically combined and can only be separated by chemical processes. Therefore, it is much harder to separate a compound than a mixture.
Answer:
the correct answer is Group of answer choices
