a 6.88 g piece of copper is heated from 20.0 ^{\circ}c to 125 ^{\circ}c and then submerged in 45.0 ml of water initially at 18.3 ^{\circ}c. what is the final temperature of the water?

Select the correct location on the image identify the element that humans need to breathe. 2015 er r ights reserved

Give a real-world example of an energy transformation that uses two of the following forms of energy: chemical, mechanical, nuclear, gravitational, radiant, electrical, thermal (heat), and/or sound.

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?