The velocity would be 0.5 i think
Answer:
C. increase to 7.
Explanation:
Hello,
In this case, the undergoing chemical reaction is:

Thus, the molar relationship is 1 to 1, therefore, the moles are:

Thus, since the entire hydrogen ions are neutralized, the pH C. increase to 7.
Best regards.
Answer:
400 meters every 20 seconds
Explanation:
The correct answer is C. Atoms are incredibly small and can bearly be seen with the most powerful electron microscopes. The nucleas of an atom contains protons and neutrons with electrons in orbitals around the nucleas. I hope this helps. Let me know if anything is unclear.
First we have to understand what a half life is. A half life is a measure of time when the amount of a certain object is 50% of the original amount. Hence the answer for this is letter A. The initial amount is 100. fifty percent of 100 is 50 and that happens after 15 hours. Hence, 15 hours is the half life period.