C. a metal.
Hope it helps!
I have no idea i am so sorry
Answer: A. the variable that is changed on purpose in an experiment.
Answer : The molar solubility of in pure water is, 0.0118 M
Explanation : Given,
The solubility equilibrium reaction will be:
Let the molar solubility be 's'.
The expression for solubility constant for this reaction will be,
Now put all the given values in the above expression, we get:
Therefore, the molar solubility of in pure water is, 0.0118 M
It is easier to predict the boiling point of heptene rather than its melting point because of their geometrical isomerism.
<h3>What is melting point?</h3>
Melting point is that point at which any compound changes its state from solid to another state liquid, and at this point both the states are present in equilibrium.
It is easier to predict the boiling point of heptene as in this molecule constant number of double bond is present its not changing. But due to double bond heptance shows cis and trans isomer, and among them one isomer will be stable and another one is unstable.
That's why it is not easy to predict the melting point.
Hence, due to geometrical isomers it is not easy to predict melting point.
To know more about melting point, visit the below link:
brainly.com/question/40140