HELP ASAP! True OR False: The arrangement of the metallic bonds is a very rigid structure of an even array of electrons and protons

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d

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

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.