B. 5/10 is equivalent to 0.5
Answer:
i hope this helps
Step-by-step explanation:
the pH of the solution is 5.74.
Can you write the question better?
Wrong category friend! I believe this belongs in the health section of brainly. However the answer should be vaccines since they contain the same anti-gens that cause the disease but not enough to give us the disease, it allows our body to build an immunity to sed disease over-time.