<h3>The average atomic mass of Iodine : 126.86 amu</h3><h3>Further explanation</h3>
Given
80% 127I, 17% 126I, and 3% 128I.
Required
The average atomic mass
Solution
The elements in nature have several types of isotopes
Atomic mass is the average atomic mass of all its isotopes
Mass atom X = mass isotope 1 . % + mass isotope 2.% + ... mass isotope n.%
Atomic mass of Iodine = 0.8 x 127 + 0.17 x 126 + 0.03 x 128
Atomic mass of Iodine = 101.6 + 21.42 + 3.84
Atomic mass of Iodine = 126.86 amu
Gradual leakage of water stored in hydrate minerals of Earth's<span> rocks could </span>have formed<span> a portion of its water. Water </span>may<span> also </span>have<span> come from volcanism: water vapor in the atmosphere that originated in volcanic eruptions </span>may have<span> condensed to form rain, slowly filling </span>Earth's<span> oceanic basins. So, the answer would be C.
I hope this helped! Good luck :)</span>
Answer:it is in group 7
Explanation:it is in this group because in the increasing number of atomic number the element is found in group seven. The element is likely to receive 3 electrons while bonding with another element to make it stable.
Answer:
The answer to your question is 25 grams
Explanation:
Data
half-life = 5730 years
sample = 200 g
after 3 half-lives
Process
Calculate the amount of sample after one, two and three half-lives.
After each half-life, that of sample is half the previous amount.
Number of half-lives Amount of sample
0 200 g
1 100 g
2 50 g
3 25 g
Answer:
i believe the answer to your question is parallax or parsecs. im sorry im not very specific in this!
Explanation:
