Answer: NaHCO3 = Na2CO3 + H2O + CO2
The statement about
“Crystalline solids do not have a sharp melting point” is false. Crystalline
solids are solids that have particles arranged in a regular, repeating
patterns. They are held together by uniform intermolecular forces. The faces
intersect at a specific angle that identifies that substance. They have
distinctive internal structures that in turn lead to distinctive flat surfaces.
These flat surfaces give a short rage order. When exposed to x – ray
diffractometers, they exhibit a distinctive pattern used to identify the
material. They give the same face when you turn a crystalline solid around
<span> </span>
False
The water is more buoyant which means the water has more of a tendency to float than the duck.
This is from dictionary: <span>a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
I would say it is 2</span>
