What element has 30 electrons, 35 neutrons and and a mass of 65 amu?

What elements have 2 electrons inthe 4s sublevel

Write the complete balanced equation for the reaction between lead (iv) oxide (pbo2) and water (h2o).

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.