The ionic equations represent the reactions between four metals, p, q, r and s, and solutions of the salts of the same metals p + q2+ -> no reaction r + p2+ -> r2+ + p q + s2+ -> q2+ + s s + p2+ -> s2+ + p s + r2+ -> s2+ + r s + q2+ -> no reaction what is the correct order of reactivity of the metals? most > least a. p r s q b. q r s p c. q s r p d. s q p r

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.

Why is the bottom layer of a trophic pyrimid the

What is the mass of naoh that would have to be added to 500 ml of a solution of 0.20 m acetic acid in order to achieve a ph of 5.0?