which of the following test can help to distinguish between aldehyde and carboxylic acid in given mixture of compound? A. Hydrolysis B. 2,4 DNPH test C. Fehling solution D. Idoform test

Earth's axis of rotation is tilted at an angle of 23.5 degrees. what is one change you would see on earth if its axis was not tilted?

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false