We have to get the product of the addition reaction between butanal and water.
The product of the addition reaction between butanal and water is the gem di-ol which is unstable and it produces the reactant i.e. butanal only.
The reaction is shown in the figure.
From the figure we can see that in the addition reaction there the –C atom of the –CHO (aldehyde group) possess two –OH (hydroxyl group) as a product (gem-diol) of addition reaction, which is highly unstable and water molecule are regenerate to form the reactant i.e. butanal again.
I think that the best phrase to fit into the blank is a "scientific theory".
A scientific theory is developed through experiments which use the scientific method, and a theory can be improved if additional data is available or if people provide suggestions which make the theory fit the data better.
Explanation:
RAM={mass number ×relative abundance (%) + mass number ×relative abundance (%)} ÷100%
so take (91.05×20) +(8.95×22)
It is a true fact that ionic crystals are excellent insulators and can hold a large amount of heat before melting or boiling. The correct option among the two options that are given in the question is the first option. Salt is a great example of ionic crystals and we know that it takes a huge amount of time to melt or boil.
I'm not so sure but I would say Answer Choice B