A50.0 ml sample of an acid, ha, of unknown molarity is titrated, and the ph of the resulting solution is measured with a ph meter and graphed as a function of the volume of 0.100 m naoh added. at which point on the titration curve is [a-] closest to twice that of [ha] ?

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

b. th3 n4zc4 pl4t3 15 c0nv3rg1ng w1th the s0uth 4m3ric4n pl4t3.

distance, luminosity, brightness, radius, chemical composition, and temperature