Answer:
Due to deficiency of Oxygen in atmosphere.
Explanation:
Oxidation is defined in two ways, 1) The addition of Oxygen and Removal of Hydrogen 2) The removal of electrons.
We will discuss the first definition for this question. The addition of oxygen to various compounds results in the oxidation of that compound.
Example: Oxidation of Methane;
CH₄ + 2 O₂ → CO₂ + 2 H₂O
In this example oxygen is added to methane and hydrogen is being removed from methane.
Oxidation type chemical weathering common more than 2 billion years ago because of less amount of Oxygen in atmosphere and the oxygen which was produced by plants reacted with different metals like Iron forming precipitates which precipitated to the bottom of oceans.
Answer: The average partial pressure of 
in the atmosphere is 77770 Pa.
Explanation
Raoult's Law states that the partial pressure of each component in the mixture is equal to the total pressure multiplied by its mole fraction. It is mathematically expressed as
where, p = partial pressure
= mole fraction
= total pressure
mole fraction of = 
(1 mbar=100Pa)
Thus the average partial pressure of in the atmosphere is 77770 Pa
Answer:
The molarity of the final solution is 1.7 M
Explanation:
The parameters given are;
First solution = 400 ml of 1.25 M
Second solution = 300 ml of 2.30 M
Therefore, we have;
First solution contains 400/1000 * 1.25 moles = 0.5 moles of the substance
Second solution contains 300/1000 * 2.30 moles = 0.69 moles of the
Hence the sum of the two solutions contains 0.5 + 0.69 = 1.19 moles of the substance
The volume of the sum of the two solutions = 400 ml + 300 ml = 700 ml
Hence we have the concentration of the final solution presented as follows;
700 ml contains 1.19 moles of the substance
Therefore;
1000 ml will contain 1000/700 * 1.19 = 1.7 moles
The molarity of the final solution = The number of moles per 1000 ml = 1.7 M.
Answer:
A polar bond is one where the charge distribution between the two atoms in the bond is unequal. A polar molecule is one where the charge distribution around the molecule is not symmetric. It results from having polar bonds and also a molecular structure where the bond polarities do not cancel.
Explanation:
