Qué concentración debe tener el alcohol que utilizamos para limpiar las superficies por el coronavirus? ¿Cómo lo prepararían si disponen de una botella de 200 ml de alcohol? ¿Cuánta agua deberían agregarle?

Solar energy is energy from the sun that is converted into thermal or energy. a. nuclear b. mechanical c. electrical d. chemical

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Which statement best describes the flow of energy in this scenario