The Lewis structure for a chlorate ion, ClO3-, should show ____ single bond(s), ____ double bond(s), and ____ lone pair(s).
2 answers:
<u>Answer:</u> A molecule of has 1 single bond, 2 double bonds and 8 lone pairs.
<u>Explanation:</u>
Lewis-dot structure is defined as the structure which represents the number of valence electrons around the atoms. The electrons are represented as dots.
This structure helps in the determination of bonding electrons and non-bonding electrons.
For the given compound
As we know that chlorine has '7' valence electrons and oxygen has '6' valence electron. The negative charge gets add up in the total number of valence electrons.
Total number of valence electrons in = 7 + 3(6) + 1 = 26
In , two electrons of 2 oxygen atoms combine with 2 electrons of chlorine and 1 electron of one oxygen atom combines with 1 electron of chlorine atom.
A lone pair remains on the central atom which is chlorine.
Hence, a molecule of has 1 single bond, 2 double bonds and 8 lone pairs.
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Answer: (C) conservation of matter
Solution: Law of conservation of matter or mass states that' total mass of the reactants should always be equal to the total mass of the product that is the total mass is remained conserved in a chemical reaction.
A balanced chemical equation always follow this law.
For example:
Mass of hydrogen = 1 g/mol
Mass of Oxygen = 16 g/mol
Total mass on the reactants = 2(2×1)+(2×16)= 36g/mol
Total mass on the product side = 2[(2×1) +16] = 36 g/mol
As,
Mass on reactant side = Mass on the product side
Therefore, a balanced chemical reaction follows Law of Conservation of mass.