Un bioquímico para preparar una solución disuelve 50 gramos de droga en 150 gramos de agua. Calcular: a. La masa de solución

b. La concentración de la solución, expresada en % m/m.

ÁTOMO

6. Un átomo de azufre tiene número atómico 16 y número másico 34 ¿Cuántos protones, electrones, neutrones tiene?

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

How do scientists think that gravity affected the formation of our solar system?

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.