Answer:
a) 210.3 g/mol
b) 210.2 g/mol
c) 384.5 g/mol
Explanation:
First step we will calculate the molar masses of ; carbon atom, hydrogen atom and oxygen atom in each .
<u> Molar mass of dibenzyl ketone</u>
Molar mass of dibenzyl ketone = ∑ molar masses of atoms in dibenzyl ketone
= carbon( 15 ) = 15 ( 12.0107 ) + oxygen ( 14 ) = 1 ( 15.999 ) + hydrogen(14) =14(1.00784)
= 210.26926 ≈ 210.3 g/mol
<u> Molar mass of benzil</u>
Molar mass of Benzil = ∑ molar masses of atoms in Benzil
= carbon( 14) = 14(12.0107) + oxygen(2) = 2 ( 15.999) + hydrogen(10) =10(1.00784)
= 210.2262 ≈ 210.2 g/mol
<u>Molar mass of 2,3,4,5-tetraphenylcyclopentadienone</u>
Molar mass = ∑ molar masses of atoms
= carbon ( 29) = 29(12.0107) + oxygen (1) = 1( 15.999 ) + hydrogen(20) = 20(1.00784 )
≈ 384.5 g/mol
Sodium, calcium, iron and gold are all metals. They all form metallic bonds, in the form of a shared electron cloud. They all have the electrical conductivity and metallic luster which comes with metallic bonds.
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The error is in the formula is bracket so the correct is Mg(OH)₂
The incorrect or error in the formula is bracket that would be that the compound contain only 1Mg atom and 1 oxygen atom and 2 hydrogen atom but is wrong when you write it in an electron dot diagram you will see that it is wrong there be unshared paired of electron and the correct formula is Mg(OH)₂
Know more about Mg(OH)₂
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Redox reaction stands for reduction/oxidation reaction whereas acid-base reaction involves acid and base in its reaction.
Acid-base reaction involves the transfer of protons whereas redox reaction involves the transfer of electrons. Thus in both the case, a charged species is transferred from one molecule to another.
In case of redox reaction, oxidation involves loss of electrons and reduction involves gain of electrons. Thus, one substance gets oxidized (acts as reducing agent and donates electrons) while other gets reduced (acts as oxidizing agent and gains electrons).
Similarly, in acid-base reaction one substance accepts proton while other releases proton. Thus, one substance is called conjugate acid (the base that accepts protons) and other is called conjugate base (acid that donates protons).
Thus reducer and oxidizer are analogous terms for acid and base respectively.
