C)crabon,oxygen and calcium
Answer is: <span>the emitted particle is
an alpha particle.
</span>
Nuclear reaction: ¹⁶O + p⁺
→ ¹³N + α (alpha particle).<span>
Alpha decay is radioactive decay in which an atomic nucleus emits
an alpha particle (helium nucleus) and transforms into an atom
with an atomic number that is reduced by two and mass
number that is reduced by four.
When oxygen-16 gain one proton, atomic mass is 17, but when lose alpha particle
atomic mass reduces by four to 13.</span>
Answer is b..............…
Explanation:
The pH of a strong acid when titrated with a strong base is equal to 7 because of the formation of a neutral salt which corresponds to pH = 7.
But on the other hand,
The titration of the weak acid and strong base, the reaction taking place is:
HC₂H₃O₂ + OH⁻ ⇒ H₂O + C₂H₃O₂⁻
At the equivalence point, the pH is greater than 7 because of the conjugate base formed in the above reaction which gives OH⁻ in the solution as:
C₂H₃O₂⁻ + H₂O ⇒ HC₂H₃O₂ + OH⁻
<u>The hydroxide ions produced in the above reaction results in the pH above 7 (basic).</u>
