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3 years ago

What is the formula for manganese (ii) fluoride decahydrate? (you may use a * to represent the dot in the formula.)?

2 answers:

4 0

These types of molecules are called hydrates. They have a certain number of moles attached to the salt. Their characteristic is being hygroscopic. That means that when they are exposed to air, they readily solvate.

The formula for Manganese Fluoride Decahydrate will involve the formula Mn, F and H₂O. In ionic form, Manganese is Mn⁺² while fluoride is in F⁻. When they are brought together, their superscripts are 'cross-multiplied' and becomes their respective subscripts. The compound becomes MnF₂. Then, we add the decahydrate which means 10 moles of H₂O. Hence, the formula for Manganese Fluoride Decahydrate is MnF₂*10H₂O.

goblinko [34]3 years ago

3 0

Answer:

MnF₂*10H₂O.

Explanation:

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Answer:

[H₃O⁺] = 7.586×10⁻⁴ M

Explanation:

The pH of a solution is a measure of the molar concentration of H₃O⁺ ions in the solution.

The mathematical expresssion that states the relation between the molar concentration of H₃O⁺ ions and the pH of the solution is:

pH = - log [H₃O⁺].

This is pH is numerically equal to the negative decimal logarithm of the molar concentration of H₃O⁺.

The square brackets are used to indicate molar concentration.

Thus:

pH = - log [H₃O⁺] ← equation

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$10^{- 3.120}=[H_3O^+]$ ← antilogarithm property

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3 years ago

The respiration rate of a goldfish is measured. The goldfish is then placed in cold water and the respiration rate is measured a

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Answer:

Temperature of the water

Explanation:

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Thus the respiration rate of the goldfish is the dependent variable because it is controlled by the temperature of the water and changes accordingly.

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