<span>The answer is C.) Layer A is the stratosphere and Layer B is the troposphere.
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Answer:
The answer is option C.
Explanation:
A covalent bonded molecule when not dissolved in an aqueous solution does not contain any ions hence does not conduct electricity making it an insulator.
Hope this helps you.
I think your claim is correct.
Because for Li, Be, B and C, their valence electron are all located in the second orbital, so based on their sequence, Li must has fewest valence electrons.
Answer:
Given, Heat of formation =−46.0 KJ/mole
Since, the enthalpy of formation of ammonia is the enthalpy change for the formation of 1 mole of ammonia from its element.
2NH
3
(g)→2N
2
(g)+3H
2
(g)
△H
reaction
=2×△H
formation
=2×−46.0 KJ/mole
Heat of reaction=−92.0 KJ/mole
Explanation:
hope its help you
