(Please Help) when adding a coefficient to a molecule what must you do to all atoms of that molecule?

A. Only multiple the first atom of the coefficient

B. multiply all of the atoms by the coefficient

C. Add the coefficient and the subscripts together, then divide them all by 2.​

Two atoms interact with each other as shown by the equation. complete the equation by filling in the missing parts. 1 2 3 4 5 h he li

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.

List the path of the respiratory system