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Why do simple covalent molecules compounds have low melting and boiling points?

Define:A simple covalent compound consists of a small number of non-metal elements covalently bonded together. (1)For example, H2O , CO2, O2. (1)Relate to MP/BP: The small molecules have only weak intermolec...
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Answered by Sam B. • Chemistry tutor
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What is cracking of hydrocarbon molecules?

Cracking is when large hydrocarbon molecules are broken down into smaller ones using a catalyst - one alkane and one alkene are formed.Alkanes are hydrocarbons with only single bonds.Alkenes have one double ...
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Answered by Valeria W. • Chemistry tutor
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What does a mixture consist of?

Two or more elements or compounds that are not chemically combined together, wherein the chemical properties of each substance remains unchanged.
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Answered by Tory R. • Chemistry tutor
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Balance the equation and write the products of this reaction. _Mg + _HCl -> _...... +_ ......

The products are a salt and hydrogen, MgCl 2 and H 2 .The balanced equation is: Mg + 2 HCl -> MgCl 2 + H 2 This is a metal/acid reaction.Mg is a Group 2 metal, so there are two electrons in the outermost ...
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How many protons, neutrons and electrons are present in a Lithium (Li+) ion?

On a periodic table, we can see that the atomic number for lithium is 3. The atomic number represents the number of protons in an atom, so Lithium has 3 protons. The atomic mass is the number of protons and ...
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Answered by Oliver K. • Chemistry tutor
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