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gizmo_the_mogwai [7]
3 years ago
13

Advantages and disadvantages of Law of Triad :

Chemistry
1 answer:
il63 [147K]3 years ago
7 0

Answer:

Dobereiner could identify only three triads. He was not able to prepare triads of all the known elements. All the known elements could not be arranged in the form of triads. For very low mass or for very high mass elements, the law was not holding good.

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What does D represent?
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Answer:

The energy of the reactants.

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Please help, super confused and urgent!
Lilit [14]

Empirical Formulae for;

Compound 1- K5 Mn5 O16

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Explanation:

Step 1; as all the element percentages are given in percent assume the total mass of the compound is 100g and take each percentage as grams i.e., 27.5% of K as 27.5 g of K and so on.

Step 2; convert the mass of each element into their mole values by dividing available mass by molar masses.

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Step 3; Divide all the values by the smallest mole value. I.e. for compound 1 after dividing the masses by molar masses we get 0.705, 0.681, and 2.187 for elements K, Mn, O respectively. Divide all three values with the least value which is 0.681 and write these values down.

Step 4; Convert all the numbers available into whole numbers by multiplying with suitable values. i.e. 3 if values are 0.33, 2 if values are 0.5 etc.  

Step 5; Assign these values to corresponding elements and you will get the above empirical formula.

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