The answer for this question is D.
10 or 30 grams
hope this help you
Answer:
See explanation and image attached
Explanation:
Yttrium has many isotopes, the lowest mass number of Yttrium is 89Y.
Recall that electron capture converts an electron into a proton and then into a neutron with a consequent emission of a neutrino (v).
In electron capture, the mass number of the daughter nucleus remains the same as that of the parent nucleus while the atomic number of the daughter nucleus is less than that of the parent by one unit.
Answer:
(we use hess's law) it is so simple but the second reaction is not correct please right it
Answer: these are just options, what is the main question, without it, we cannot determine which option is correct, so please repost the question.