Answer: The sign of ΔH° for the reaction is positive.
Explanation:
Given: = 155 kJ/mol (1 kJ = 1000 J) = 155000 J/mol
The relation between and is as follows.
As the given value of is positive. This means that on further calculation the value of will come out to be positive.
Thus, we can conclude that the sign of ΔH° for the reaction is positive.
It is true, because a strong magnet that can be turned off and on is an electromagnet.
Answer:
Ca^+2
Explanation:
Hence, the correct option is A.
The answer is: [D]: a reactant.
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The first one is remove heat
Second is add heat