Which of the following apply to the property of hardness. select all that apply. -hardness is determined through a complicated process that requires expensive instruments. -hardness is a physical property. -hardness is indicative of the strength of chemical bonds between elements. -friedrich mohs developed the standard hardness scale. -diamond can scratch quartz.

Which best describes how johannes kepler developed his laws of planetary motion

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.

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?