What are the origins of the word fossil
1 answer:
The origins of the word fossil are French and Latin
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Statement B is true because atoms are single particles that come together to form compounds and molecules.
The composition would be more "diluted" in a sense.
C is the answer.
It says on the third picture that Bohr refined Rutherford's model by giving distinct orbits for the electrons with distinct radii.
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Answer:</h3>
- K₂S
- CaSO₄ (slightly soluble in water)
- Pb(ClO₄)₂
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Explanation:</h3>
- Mg(OH)₂ and CoCO₃ are insoluble in water.
- Solubility rules are used to determine whether a compound will be soluble or not soluble in aqueous form.
- K₂S is soluble in aqueous solutions as all salts of Potassium are soluble in water.
- Calcium (ii) sulfate is slightly soluble in water.
- Hydroxides are insoluble in water except, KOH, NaOH and NH₄OH.and Barium hydroxide. Therefore, Mg(OH)₂ is an insoluble hydroxide.
- CoCO₃ is insoluble since carbonates are insoluble except K₂CO₃, Na₂CO₃ and (NH₄)₂CO₃. .
- Pb(ClO₄)₂ is soluble because all perchlorates are soluble.
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