11. ¿Qué gas está entre los que inhalas y es necesario para la respiración? 12. ¿Cuál es una dificultad para identificar las mezclas de gases?
TEMA 3
La fuerza de gravedad
1. ¿Puedes citar algunas acciones en las que apliques una fuerza?
2. ¿Qué ocurre con los objetos y la Tierra?
3. ¿De qué depende la intensidad de una fuerza?
4. ¿Qué pasa con los cuerpos que tienen mayor masa?

por favor es para ahorita

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table?

A2-kg bowling ball is 1 meter off the ground on a post when it falls. just before it reaches the ground, its traveling 4.4 m/s. assuming that there is no air resistant, which statement is true a. the initial potential energy is less then the final kinetic energy b. the mechanical energy is not conserved c. the mechanical energy is conserved d. the initial potential energy is greater than the final kinetic energy

Describe the process that was used in this lab to create magnesium oxide, specifically identifying the type of chemical reaction. explain why the product had a higher mass than the reactant, and how this relates to conservation of matter.