In the calculation of calorific value of any fuel why the latent heat of vap. of water is taken as 587 kj/mol whereas actually it is 540kj/mol?

0 Answers  

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What is the molarity of a NaOH solution if 32.47ml. isrequired to titrate 0.6013g of potassium hydrogen phthalate?

2 Answers  

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What is positive testing in relation to chemistry? For example, the sentence reads "Sample solutions are solutions known to contain one of each of the following ions, silver ion, Ag+(aq), barium ion, Ba2+(aq), and iron (III) ion, Fe3+(aq). Testing solutions are the solutions containing a polyatomic ion that can react with one of the metal ions to give a positive test." I am then asked to define what a "positive test" is. I am currently a student who is pretty new to chemistry, please try and make your answer as simply as possible. Thanks for the help.

2 Answers   UST,

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Why does a rose appear black when the light of any other colour except red is made to fall on it ?

1 Answers  

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Why is an echo not heard in a small room ?

3 Answers  

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What is General Properties of Acids ?

4 Answers   College School Exams Tests, TCS,

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What is hydrogenation of oils ?

1 Answers  

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what is ppm?how to prepare 75 ppm?

6 Answers   Bureau Veritas,

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What is an alloy ?

3 Answers  

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While standing on railway platform and heating the whistle of an engine coming towards us , we hear the sound increasing; bit when the engine is receding from us it appears to fall why ?

1 Answers  

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Explain the Isobars?

1 Answers  

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what is the process for separating the components of gunpowder?

2 Answers  

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