Primary and secondary amines form hydrogen bonds among themselves. Assume you have a solution of ethanamine (ethylamine). Draw two molecules of ethanamine and show a hydrogen bond formed between them.

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory

According to the kinetic-molecular theory, what happens to a liquid when it is transferred from one container to another? the volume and the shape stay the same. the volume increases to fill the new container, but the shape stays the same. the volume stays the same, but the shape changes to fit the new container. the volume and the shape change to fill the new container.