Which of the following is the correct formula to calculate percent by mass? (5 points) [Mass of solution (9) + mass of solute (g)] x 100
[Mass of solute (g) = mass of solution (g)] x 100
[Mass of solute (g) – mass of solution (g)] x 100
[Mass of solution (g) + mass of solute (g)] x 100

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.