An interplanetary expedition uncovered the remnants of an ancient civilization on Mars. They discovered two spherical objects made from previously unknown elements. The Martians had named one element Altrium, density 5.62 g/cm3, and the other element Hypotrium, density 2.77 g/cm3. Each sphere was exactly 10.00 cm in diameter. What was the difference in masses of the two spheres in grams? Volume of a sphere = (4/3)πr3. π = 3.1416.

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

Adilute aqueous potassium nitrate solution is