Please help I don’t know this question )): thank you !!(:p
1 answer:
The given data states that the 2-D diagram is representing Lithium molecule.
few things one must know before solving the question,
Lithium is a Alkali metal having 3 electrons, out of which two electrons lies in 1S orbital (K shell) & one electron lies in 2S orbital. To attain the stability ( nobel configuration) lithium requires 7 electron which is not possible at ordinary condition & it requires a huge amount of energy instead lithium loses one electron from outermost shell.
We know that when any atom loses a electron the oxidation number is written with plus(+) symbol.
Hence net charge on lithium ion is +1
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Answer : The final temperature of the mixture is
Explanation :
In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.
where,
= specific heat of iron =
= specific heat of water =
= mass of iron = 39.9 g
= mass of water =
= final temperature of mixture = ?
= initial temperature of iron =
= initial temperature of water =
Now put all the given values in the above formula, we get
Therefore, the final temperature of the mixture is