En el ejemplo de la reacción de 2g de cobre con aire para producir 2.5 g de un óxido de cobre, ¿en qué ley se basa para deducir que reaccionaron o.5 g de oxígeno con los 2 g de cobre?

It’s b. mass i searched it up

What are the options? physical property can be color, smell, opacity, viscosity, density, infra red spectrum, melting and boiling points, attraction and repulson to magnets, etc.

Vander waals forces are inter molecular bonds that exist within molecules of the same substance. a water molecule is made up of oxygen and hydrogen atoms which share electrons between each other. the vander waals forces are forces that exist between multitude of different  molecules of water. dipole dipole forces is the type of vander waals force that exist in water. the oxygen atom which is more electronegative pulls the shared electron closer to itself thus generating a partial negative charge while the hydrogen acquire a partial positive charge. these two different charges causes attraction to occur in water molecules.

The answer would be 25.3