The heat capacity of solid iron is 0.447 J/gËC. If the same quantity of energy were transferred to a 450 g chunk of iron at 20ËC, what would be the final temperature?

The final temperature of the iron after the heat transfer of 65 kJ will be  343.14 .

The specific heat is the amount of heat required to raise the temperature of 1 g of substance by 1-degree celsius.

The specific heat can be given by:

Q = mcT

Q = specific heat = 65 kJ

c= heat capacity = 0.447 J/g

m = mass of the iron = 450 g

T = change in temperatue = final temperature - initial temperature

T = final temperature - 20

Putting the values in the equation:

65000 J = 0.447 J/g 450 g

65000 J = 201.15   ( final temperature - 20 )

Final temperature - 20  = 323.14

Final temperature = 343.14 .

The final temperature of the iron after the heat transfer of 65 kJ will be  343.14 .

For more information about heat transfer, refer to the link:

link

Explanation:

Given that,

The heat capacity of solid iron is 0.447 J/g°C.

Mass, m = 450 g

Initial temperature,

Let the heat transferred, Q = 65 kJ

We need to find the final temperature. The heat transferred is given by :

So, the final temperature is .

h let me think

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.