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Chemistry: Post your doubts here!

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In an experiment, 12.0dm3 of oxygen, measured under room conditions, is used to burn completely 0.10mol of propan-1-ol. What is the final volume of gas, measured under room conditions? A 7.20dm3 B 8.40dm3 C 16.8dm3 D 18.00dm3 ans is B. Pls explain how
 
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In an experiment, 12.0dm3 of oxygen, measured under room conditions, is used to burn completely 0.10mol of propan-1-ol. What is the final volume of gas, measured under room conditions? A 7.20dm3 B 8.40dm3 C 16.8dm3 D 18.00dm3 ans is B. Pls explain how
 

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Is the boiling point of a compound directly proportional to percentage of carbon in the compound?
how to find sigma and pi bonds and what are they?
 
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Which fertilisers, when washed out of soil by rain, cause excessive growth of river plants and
algae with the result that fish in the river die?
1 K2SO 4
2 NH4NO 3
3 NaNO3

Only 2 and 3 are correct. Won't the K+ ions in 1 also cause excessive growth in plants?
 
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Which fertilisers, when washed out of soil by rain, cause excessive growth of river plants and
algae with the result that fish in the river die?
1 K2SO 4
2 NH4NO 3
3 NaNO3

Only 2 and 3 are correct. Won't the K+ ions in 1 also cause excessive growth in plants?
Is it used as a fertilizer?
 
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Someone pls help it's ans is B y not D?View attachment 64008
Was going to ask the same!!

Well I suppose when we studied about molecules possessing energy we know that it is not the case that a very large number of molecules possess very low energy or very high energy I mean the peak of the graph never shifts to the far left or right in case of showing energy. Most molecule posses average energy thus option D is incorrect.
In option B at high temperature peak lowered showing the correct graph.
 
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Is it used as a fertilizer?
Well yes it is used as a fertilizer
The dominant use of potassium sulfate is as a fertilizer. K2SO4
But I am also not able to figure out why it is not involved in eutrophication.
Well It is also soluble in water.
 
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Well I suppose when we studied about molecules possessing energy we know that it is not the case that a very large number of molecules possess very low energy or very high energy I mean the peak of the graph never shifts to the far left or right in case of showing energy. Most molecule posses average energy thus option D is incorrect.
In option B at high temperature peak lowered showing the correct graph.
but the peak is at almost the same energy level...I mean it is not shifted to the right
 
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