Answer:
Jjzjxjzjjzzzkmzkzkzjzjzjxjj j jxkiIIJzizjcjxnJ zbuzbx zbah z
I believe it is D as you are hearing the copper tube
it is covalent because it does not dissolve in water
Hey there!:
Number of moles:
Molar Mass Al = 26.98 g/mol
n = mass / molar mass
n = 9.0 / 26.98
n = 0.3336 moles of Al
Given the reaction :
2 Al + Fe2O3 = Al2O3 + 2 Fe
From the equation, 2 moles of Al give off 849 kJ of heat :
Actual heat given off :
0.3336 / 2 * 849 =
0.3336 / 1698 = 1.4*10² Kj
Hope that helps!
