Answer:
There are 6 non bonding pair of electrons present in Lewis structure of peroxide ion.
Explanation:
Ionic formula of peroxide ion is 
Total number of valence electron present in peroxide ion is 14 (12 electrons come from two oxygen atoms and another 2 electrons come from negative charges).
After fulfilling octet rule, Lewis structure of peroxide shows that each oxygen atom contains three non bonding electron pairs and a covalent bond.
Hence there are 6 non bonding pair of electrons present in Lewis structure of peroxide ion.
Lewis structure has been given below.
Answer:
2.85moles of oxygen gas
Explanation:
Given parameters:
Volume of oxygen gas = 63.8L
Unknown:
Number of moles = ?
Solution:
We assume that the gas is under standard temperature and pressure. To find the number of moles, use the expression below:
1 mole of a gas at STP occupies a volume of 22.4L
So;
63.8L of oxygen gas will take up a volume of
= 2.85moles of oxygen gas
Answer:
<h3>I don't know what is the answer of your question sorry never mind..</h3>
Explanation:
<h3>And please marks me as brainliest... </h3>
Volume is 2.3×2.4×20=110.4 cm^3
there is given an object mass, so maybe you need a density too?
density = mass / volume = 17.5/110.4=0.1581 g/cm^3
The cracks are known as faults
