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salantis [7]
3 years ago
5

The scientist finds fossilized remains of other species in the same rock layer as the trilobite. What can the scientist conclude

about
these other fossils?
Chemistry
1 answer:
Sophie [7]3 years ago
4 0

The Organisms that formed them likely lived during the Paleozoic era.

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What is the concentration of a saturated solution of SrSO4? SrSO4 has a Ksp of 3.2 x 10–7
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SrSo4 = Sr(2+) + SO4(2-)

Let’s say that the initial concentration of SrSo4 was 1. ( or we have 1 mole of this reagent).

When The reaction occurs part of SrSo4is dissociated. And we get X mole Sr(2+) and So4(2-).
Ksp=[Sr(2+)]*[SO4(2-)]
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Answer:

Option B

Explanation:

Magnesium is an alkali earth metal and chlorine is a nonmetal. Due to this, and their differences in electronegativity, the elements form an ionic bond. Since magnesium has two valence electrons, it will give them up to two chlorine atoms (which has 7 valence electrons), which needs them to complete its octet. From this, magnesium forms a cation, and will have the ion formula Mg(2+). The two chlorine atoms form anions, and will have the ion formula Cl(1-).

Terms:

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