Given:
Iron, 125 grams
T
1 = 23.5 degrees Celsius, T2 =
78 degrees Celsius.
Required:
Heat produced in kilojoules
Solution:
The molar mass of iron is 55.8
grams per mole. SO we need to change the given mass of iron into moles.
Number of moles of iron = 125 g/(55.8
g/mol) = 2.24 moles
<span>
Q (heat) = nRT = nR(T2 = T1)</span>
Q (heat) = 2.24 moles (8.314
Joules per mol degrees Celsius) (78.0 degrees Celsius – 23.5 degrees Celsius)
<u>Q (heat) = 1014.97 Joules or
1.015 kilojoules</u>
<span>This is the amount of heat
produced in warming 125 g f iron.</span>
Magnesium has atomic no 12
Electronic configuration given by
Or
Mechanical energy<span> of </span>an object<span> can be the result of </span>its<span> motion
i think
</span>
It 1
cause yea it is im doing it in class and the answers is 1
Answer:
I do not know if I am correct but I think it is the letter D I hope it helps you if it is correct pls brainliests
