Consider the equation: ca+o2→cao what needs to be done in order to balance the equation? a place a 2 in front of the o2 and the cao . b place a 2 in front of the cao only. c place a 2 only in front of the ca . d place a 2 in front of the ca and the cao .

D

Explanation:

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Answer : The correct option is, (D) Place a 2 in front of the Ca and the CaO.

Explanation :

Balanced chemical reaction : It is defined as the number of atoms of individual elements present on reactant side must be equal to the product side.

The given unbalanced chemical reaction is,

This chemical reaction is an unbalanced reaction because in this reaction, the number of atoms of oxygen are not balanced while all the atoms are balanced.

In order to balanced the chemical reaction, the coefficient 2 is put before the 'Ca' and 'CaO'.

Thus, the balanced chemical reaction will be,

Hence, the correct option is (D) Place a 2 in front of the Ca and the CaO.

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

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explanation: