Answer:
B
Explanation:
distance = speed x time
therefore your answer is B
hope this helped have a good day bro cya)
Explanation:
i guess it's through thousands of research and experiments they conducted
For example:
5Cl₂ + I₂ + 12NaOH = 10NaCl + 2NaIO₃ + 6H₂O
Na₂S₂O₃ + 4I₂ + 10NaOH = 8NaI + 2Na₂SO₄ + 5H₂O