what is the chemical formula of (Sodium hydroxide ) ??
<h3> ⚘ NaOH</h3>- Sodium hydroxide, Sodium oxidanide
8. Write the notation of an atom 'X', if the mass number is A and the atomic number is Z.
1 answer:
Answer:
is the notion of an atom 'X', if the mass number is A and the atomic number is Z
Explanation:
The symbol of the element is "X"
The notion comprises of symbol of element "X" in the center.
On the upper left side of the symbol mass number "A" is kept and on the lower left side of the symbol, atomic number "Z" is kept.
Thus, notion will be
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Answer: < 0
Explanation:
Entropy is the measure of randomness or disorder of a system. If a system moves from an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.
For the reaction
In this reaction gaseous reactants are converting to solid products. The randomness will decrease and hence entropy will also decrease. Thus is negative or less than zero.