Draw the structural formula for a hydrogen molecule (H2) and an oxygen molecule (O2). Remember that each line represents an elec
tron pair being shared
2 answers:
Answer : The structural formula for a hydrogen molecule and an oxygen molecule are shown below.
Explanation :
Structural formula : In the structural formula, the bonding and type of bonds which holds the atoms in molecule together are shown.
First we have to determine the Lewis-dot structure.
Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.
In the Lewis-dot structure the valance electrons are shown by 'dot' and two dots combine to form a single bond.
The given molecule is,
As we know that hydrogen has '1' valence electron.
Therefore, the total number of valence electrons in = 2(1) = 2
According to Lewis-dot structure, there are 2 number of bonding electrons and 0 number of non-bonding electrons. That means, there are 1 electron pairs being shared between the hydrogen-hydrogen atom.
The given molecule is,
As we know that oxygen has '6' valence electron.
Therefore, the total number of valence electrons in = 2(6) = 12
According to Lewis-dot structure, there are 4 number of bonding electrons and 8 number of non-bonding electrons. That means, there are 2 electron pairs being shared between the oxygen-oxygen atom because oxygen has ability to form double bond.
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Answer:
Explanation:
A mole is any quantity of a substance that contains 6.02 × 10²³ particles. At standard temperature and pressure, or STP, 1 mole of as is equal to 22.4 liters. This is true for any gas, regardless of the specific kind.
Although it is not specified, we can assume this gas is at STP. Let's set up a ratio using this information: 22.4 L/mol
Multiply by the given number of liters: 12
Flip the ratio so the liters of chlorine cancel.
The original measurement of liters has 2 significant figures, so our answer must have the same.
For the number we found, that is the hundredth place.
- 0.53<u>5</u>71428571
The 5 in the thousandth place tells us to round the 3 up to a 4.
12 liters of chlorine gas at STP is approximately <u>0.54 moles of chlorine gas.</u>