on June 21st the rays of the sun fall directly on the Tropic of Cancer true or false pls tell the ans and I follow u

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.

Drug abuse will not lead to physical and psychological dependence. true or false ?

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0