
An atom of this isotope contains 5 protons and 10-5=5 neutrons.

The answer is A. 1.67 × 10⁻²⁶ kg.
I think it would be penicillin as it saved many lives in its time and ours.
Column is the answer hopefully this helps
H2SO4 or hydrogen sulfate is an acid and NaOH or sodium hydroxide is a base or an alkali. The reaction between an acid and a base or alkali produces a salt and water. The reaction between these substances is shown below:
H2SO4 (aq) + 2NaOH (aq)------>2H20 (L) + Na2SO4 (aq). The salt produced in this reaction is sodium sulfate.
Answer:
1s2 2s2 2p6 3s2 3p6 4s2 3d 104 p6 5s2 4d 105 p2