I mostly believe in between D and B beacuse K3po4 and caco3 is not an element equation
Alkali are soluble bases, however not all bases are soluble in water, therefore not all bases are Alkali.
Br₂ is a completely non-polar molecule as it has two bromine atoms of equal electronegativities, which results in no dipole moment. CCl₄ is also a completely non-polar molecule. Although, there is a dipole moment for every C-Cl bond in the molecule. But since the structure of CCl₄ is tetrahedral, this results in every dipole cancelling out which provides an overall molecule with no dipole moment.
Since both molecules are non-polar with no net dipole moments, and there are no hydrogens capable of hydrogen-bonding, the only intermolecular forces between the two species are van der waals forces, more specifically London dispersion forces.
The London dispersion forces are instantaneous dipole moments created when the two molecules interact which causes a very weak attraction.
The claim that scientific knowledge is based on observation and inference is that science is always about empirical evidence , and when making observations , we can get some evidences and inference which serves a conclusion gotten on basis of evidence and reasoning.
<h3>What is scientific knowledge ?</h3>
Science knowledge serves as the knowledge that is based and focus on empirical evidence.
It should be noted that in Science disciplines their is sharing of common rules of evidence which is needed in evaluation of explanations about natural systems.
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