Coefficients need to be changed while balancing a chemical reaction beacuse subscript show how the molecule exists in nature
Answer: C) When a force is applied to the crystal, the strong electrostatic interactions cause similar ions to repel and shatter the crystal lattice.
Explanation: Took the test :D
Answer:Your answer is B
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Explanation:
Answer : The value of change in entropy for vaporization of water is 
Explanation :
Formula used :

where,
= change in entropy of vaporization = ?
= change in enthalpy of vaporization = 40.7 kJ/mol
= boiling point temperature of water = 
Now put all the given values in the above formula, we get:



Therefore, the value of change in entropy for vaporization of water is 