Answer:
three types of stimuli consists of
Mechanical,
thermal,
and chemical.
Explanation:
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Answer:
according to law of conservation of mass given by lavoiser mass can neither be created nor be destroyed in a chemical reaction
so Al atoms on both sides should be same total al atoms are 4
Answer:
B
Explanation:
When the electron goes up levels it absorbs energy to enter that higher energy state. When it goes down, it releases energy but just not as much because 1-4 is more than 4-2.
Answer : The number placed in front of should be, three (3).
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 chloride and sulfate ion are not balanced.
In order to balanced the chemical reaction, the coefficient 3 is put before the , the coefficient 2 is put before the and the coefficient 3 is put before the .
Thus, the balanced chemical reaction will be,
Therefore, the number placed in front of should be, three (3).