The answer is <span>Polonium-218 (84 protons).
Alpha particles consist of two protons and two neutrons. So, mass is 4 (2+2) amu </span><span>.
</span><span>When an atom of emits an alpha particle, its atomic number will be reduced by 2 and a mass number will be reduced by 4:
</span> → + .<span>
After emission of the alpha particle from Radon-222 with 86 protons, the daughter product will have the atomic number reduced by 2: 86-2 = 84 and the mass number reduced by 4: 222-4=218:
</span> → + .
The tests are done before a blood transfusion. Blood typing is the first step. This test finds out whether you have blood type A, AB, B, or O. Your blood is also tested to find out whether your Rh type is negative or positive.
Answer:
The hominid pelvis displays many unique features (when compared to
that of quadrupedal primates) that support bipedalism. The major
adaptations are seen in the sacrum and the ilia, as well as in the
overall configuration and orientation of the pelvic bones.
Explanation:
These changes in the sacrum were for the adaption of standing on two legs,
The uniqueness is also that ilia are rotated and curved medially, bringing the lateral edge of the blade forward and projecting the top of the ilia outward laterally.
Answer:
A proteins coated with phospoholipids
Explanation:
Because proteins are large component and passing through a cell membrane that have large size is hard. But if you have similar quality with the cell membrane, it can pass through so that the pharmacy industry use this technique for hormones etc.
It is the ovary i believe
hope it helps
