what is enthalpy of hydration?

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During Soundness testing of Cement by Lechatelier method the Cement mould expands about 20 mm when merged in curing water for 24 hours after mould preparation.In that Cement MgO content is about 3.0%,SO3 is about 2.6% & Blaine is about 360 M2/Kg.Guess the reason & suggest solution.

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what are UV rays absorbs slightly?

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4 Identify the substance oxidized, reduced, oxidizing agent and reducing agent for the following reactions

0 Answers   MahaGenco,

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Find out how to make artifacts the maxwell boltzmann theory of gases.

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a sample of gas occupies a volume of {450.0 ml}at {740 mm Hg}and[16C]determine the volume of this same sample at [760 mm Hg]and [37c]?

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What is unsaponifiable matters?

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. Given that 2Hg2+ (aq) + 2 e- Hg22+(aq) E0 =0.92V Hg22+ (aq) + 2 e- 2Hg(l) E0 =0.85V Calculate standard free energy change and K for the following process at 25oC Hg22+(aq) Hg2+ (aq) + Hg(l)

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what is allowable limit Of stray light for a spectrophotometer laboratory instruments ?

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How can be set a responds factor for evaluating a unknown impurity by HPLC

0 Answers   Orchid,

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if water is mixed with mercury what causes with thier suspension property is it increses,decrease or average?

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what are the advantage and disadvantages of evaporation?

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