The heat required to completely melt the given substance, platinum, we just have to convert first the given mass in mole and multiply the answer to its molar heat of fusion..
Hf = mass x (1/molar mass) x molar heat of fusion
Hf = (85.5 g) x (1 mole/195.08 g) x 4.70 kcal/mol
Hf = 2.06 kcal
The physical changes are:
- condensation of water vapors
- carving wax
- slicing a banana tearing
- aluminum foil
The chemical changes are:
- bleaching hair
- silver tarnishing,
- frying an egg, and
- burning paper
<h3>What are physical and chemical changes?</h3>
Physical changes are changes which occur in a substance which may alter the physical properties of the substance but does not affect the chemical properties of the substance. Physical changes are easily reversible
In physical changes, no new substances are formed. Example of a physical change is the melting of ice or candle wax.
Chemical changes are changes which alter the chemical properties of a substance and in which new substances are formed. Example of chemical changes are; the rusting of iron, bleaching hair silver tarnishing, frying an egg, and burning paper.
Chemical changes are not easily reversible.
In conclusion, physical changes do not produce new substances while chemical changes produce new substances.
Learn more about physical and chemical changes at: brainly.com/question/18526179
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Wisconsin fast plants have properties that make it easy to grow and see how organisms grow
The group of statements are given below that are required to answer the question:
The organisms have the same genus.
The organisms are in the same phylum.
The organisms are in different kingdoms.
The organisms are members of the same species.
Answer:
The correct answer is: The organisms are in the same phylum
Explanation:
The Phylum is the classification rank or rank in the hierarchy which includes the organism of the same classes but different orders which means the organisms of phylum show the difference on order level.
Species and genus are the least inclusive ranks the which means they have fewer organisms and come on a lower level of the hierarchy or classification ranks.
Thus, the correct answer is - option - The organisms are in the same phylum
Well a mixture is less permanent and also it can be easily taken aprt where a compound does the opposite of those things.
Hope I helped :)