Sebastian wants to write the chemical formula for phosphorus tetraoxide. He identifies the chemical symbols as P and O. Which additional step will he take in his process? identify the elements involved as potassium and oxygen

add a subscript of 4 after the O

write the chemical symbols, in order, as OP

use the prefix tetra before oxygen

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.