Số amin bậc một có cùng công thức phân tử C3H9N là

A. 3. B. 1. C. 2. D. 4

What diagram shows the ionic compound of magnesium oxide

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17