30.5 mL of a weak base are titrated with 24.3 mL of a strong 1.5 M acid solution. What is the concentration of the weak base before any acid was added?

i'm pretty sure it is letter c.) car

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

i think that the answer is c

answer seismograph;