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Andreyy89
3 years ago
9

the melting point of scandium fluoride is 1552°c, explain why scandium fluoride has a high melting point.​

Chemistry
2 answers:
Greeley [361]3 years ago
5 0

Answer:

Scandium(III) fluoride, ScF3, is an ionic compound. It is slightly soluble in water but dissolves in the presence of excess fluoride to form the ScF63− anion.

hope it will help you......

pogonyaev3 years ago
4 0

Answer:

yes the above answer is right

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They are better because they are more usable than Plastic and reusable water bottles are better for the planet!

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If all of your calculations involved using a 'hot pink' result, what would be the result of the unknown acid concentration?
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it would appear to be more concentrated than it should be because more base was added that should have been

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When heated zinc carbonate decomposed to form zinc oxide and carbon dioxide gas how do you knke decomposition is complete
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This reaction is characteristic to metal carbonates, which decompose when heated to form the oxide of the metal and carbon dioxide gas.

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Amy is asked to determine the chemical composition of an unknown liquid sample. She determines that the sample is negative for p
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Answer:

Amy can apply the Tyndall Beam effect ,by shining a beam of light through the sample solution.

Explanation:

The chemical test for starch is add iodine solution to the tested sample which is yellow/brown and observe the color change to blue/black color. However, the physical test to distinguish simple sugars from starch is the shine a beam of light through the sample solution. Because that sample solution contained no simple sugars, then the presence of starch in the solution will be indicated by dispersal of light because the large starch molecules are enough to affect the light.

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3 years ago
Assume reaction N (g )space plus O (g )rightwards arrow N O (g )occurs in high layers of the atmosphere. What is the H subscript
8090 [49]

Answer:

Kindly check the explanation section.

Explanation:

From the description given in the question above, that is '' H subscript f to the power of degree of the reaction" we have that the description matches what is known as the heat of formation of the reaction, ∆fH° where the 'f' is a subscript.

In order to determine the heat of formation of any of the species in the reaction, the heat of formation of the other species must be known and the value for the heat of reaction, ∆H(rxn) must also be known. Thus, heat of formation can be calculated by using the formula below;

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That is the heat of formation of products minus the heat of formation of the reaction g specie(s).

Say heat of formation for the species is known as N(g) = 472.435kj/mol, O(g) = 0kj/mol and NO = unknown, ∆H°(rxn) = −382.185 kj/mol.

−382.185 = x - 472.435kj/mol = 90.25 kJ/mol

5 0
3 years ago
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