¿Què concentración tendrá una solución que se preparò disolviendo 50 g de una sal en 150 g de agua? ​

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

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?

What prefix multiplier is appropriate for reporting a measurement of 5.57 ×10−5 m?