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Calculate the relative molecular mass of CaCO3. (relative atomic mass (Ar): C= 12, Ca= 40, O= 16)

Number of atoms Ca x1 => 40x 1= 40 C x 1 => 12x1 = 12 O x 3= 16 x 3= 48CaCO3 RMM= 40 + 12 + 48= 100
RM
Answered by Roxanne M. • Chemistry tutor
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What is a dative covalent bond?

A dative covalent bond, or coordinate bond, is a bond where there is 1 pair of shared electrons between two atoms. The difference relative to a covalent bond is that in a dative covalent bond these electrons...
AN
Answered by Angela N. • Chemistry tutor
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The intermolecular interactions between halogen molecules are Van der Waals' forces. Explain how these Van der Waal's forces arise between halogen molecules.

Electrons are mobile or move in halogen molecules. Therefore, there can be an uneven distribution of electrons or electron density in halogen molecules (1 mark). This creates a temporary or instantaneous dip...
AL
Answered by Andrew L. • Chemistry tutor
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Why is a nucleophilic substitution reaction between ammonia and benzene unlikely?

A nucleophilic substitution reaction is when a nucleophile (an electron pair donor) replaces an atom or part of a molecule. In this scenario ammonia (NH 3 ) is the nucleophile as it contains a lone pair of e...
AS
Answered by Archit S. • Chemistry tutor
11705 Views

What is a covalent bond?

A covalent bond in an intramolecular bond which occurs when a pair of electrons is shared between two elements, usually two non-metals. The electrons shared are in the outer shell of the atom of each element...
RP
Answered by Rebecca P. • Chemistry tutor
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