Answer:
Option (C)
Explanation:
The O horizon is the top layer of the soil, which occurs as both thick and thin soil at different places, and it is absent in certain places. It is comprised of organic matter which mainly includes the decomposed leaves and also sometimes, the dead remains of animals are also found which enhances the quality of the soil. This layer is also known as the humus or organic layer.
Thus, the correct answer is option (C).
Kdd was he e shxiuw r thai ed
Answer:
Explanation:
Any densities less than 1g/cm3 will float, while objects with densities over 1g/cm3 will sink.
Answer: 31.8 g
Explanation:
To calculate the moles :
According to stoichiometry :
1 mole of 
require 3 moles of 
Thus 0.59 moles of will require=
of
Thus is the limiting reagent as it limits the formation of product and is the excess reagent as it is present in more amount than required.
As 1 mole of give = 2 moles of 
Thus 0.59 moles of give =
of
Mass of 
Thus 31.8 g of will be produced from the given masses of both reactants.
