water H2O is made up of different elements hydrogen and oxygen is this type of combination of mixture or a pure substance
2 answers:
<u>Answer:</u> The given compound (water) is a pure substance
<u>Explanation:</u>
A pure substance is defined as the substance which is formed by same or different type of atoms which are chemically combined in a fixed ratio by mass.
Compounds and elements are considered as pure substances
A mixture is defined as the substance which is made by mixing two or more substances in any ratio. They can be separated by physical means.
Water is formed by the combination of hydrogen and oxygen elements in z fixed ratio of 1 : 8 by mass. Therefore, it is considered as a compound.
Hence, the given compound (water) is a pure substance
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The correct Lewis structure of SO2 is the Lewis structure that shows all the 12 valence electrons in the molecule.
A Lewis structure shows the number of valence electrons on the valence shell of all the atoms in a compound. The electrons are shown as dots around the symbol of each element or a dash to indicate shared electrons in a covalent bond.
Looking at the Lewis structure of SO2 attached to this answer, we can see the twelve valence electrons in the molecule and how they are distributed around each atom as shown.
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