They both turn something on, and the way they are different is the way they turn it off<span>
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Answer:
Number of Significant Figures: 4
The Significant Figures are 5 4 3 9
Explanation:
The water of hydration is not covalently bound to the compound.
Many compounds, especially ionic compounds contain molecules of water of hydration which appears as part of the chemical formula of the compound.
This water of hydration is only attached to the crystal of the compound loosely. There is no chemical interaction between the water molecules and the crystal of the compound.
To prove this, the water of hydration is easily driven off by heating. It wouldn't have been possible to drive it off by heating if was covalently bonded to the compound.
Therefore, the water of hydration is not covalently bound to the compound.
Learn more: brainly.com/question/919417
