2. A student measures the length of a room for five times. The readings are 4:65 m, 4.64 m, 4.63 m, 4.66 m and 4.7 m. a) What is the average reading? b) What is the advantage of taking the reading more than once?

Which of these best describes the scientific process

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.

Explain what happens at the saturation point when adding salt to water at room temperature.