It takes one oxygen to combine with two hydrogen atoms to form water. What is the mass ratio of oxygen to hydrogen? 1 to 2 4 to
1 answer:
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Answer: Option (b) is the correct answer.
Explanation:
When an atom is attached to another atom through sharing of electrons then bond formed between the atoms is known as a covalent bond. And, a bond formed by transfer of electrons from one atom to another is known as an ionic bond.
For example, electronic configuration of hydrogen is and electronic configuration of oxygen is
. So, in order to attain stability hydrogen needs 1 more electron and an oxygen atom needs two electrons.
Therefore, two hydrogen atoms need to covalently bond through an oxygen atom leading to the formation of .
Thus, we can conclude that the electronegative oxygen that is central to a water molecule is covalently bound to two hydrogen atoms. These hydrogens are 'bent' to form a angle because four of the outer e- about oxygen are shared with hydrogens.
Answer:
Explanation:
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In this case, since the reaction between aluminum and iron (III) oxide is:
In such way, since there is 2:1 mole ratio between aluminum (atomic mass = 26.98 g/mol) and iron (III) oxide (molar mass = 159.70 g/mol), we'll be able to compute the mass of the required reactant as shown below:
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