Phản ứng nào dưới đây đúng? A. CH3COOC2H5 + NaOH CH3OH + C2H5COONa.
B. CH3COOC2H5 + NaOH CH3COOH + C2H5ONa.
C. CH3COO-CH=CH2 + NaOH CH3COONa + CH3CHO.
D. CH3COOCH3 + H2O CH3COOH + CH3OH.

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?

Which type of intermolecular attractions holds ammonia molecules together with other ammonia molecules?

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost