5.0 mL of reactant A (0.10 M) was added to 5.0 mL of reactant B (0.25 M). The reaction was monitored until all of A was consumed, according to the reaction A + 2B → C. The measured reaction time was 69 seconds. What is the rate of this reaction?

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom