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Steam supply for experiments in heat
A tin with a press-on lid may be used to make a steam can. Punch two holes in the lid and solder by them one long and one short pipe as shown in the diagram. The long pipe serves as a safety valve and the short single supplies steam to the experiment (by a rubber tube attached). When the tin leaks or becomes rusty the similar lid may be transferred to a same tin.
Preparation of cycloalkane by perkins method
For the dissociation equilibrium of formic acid, HCO 2 H(aq) ↔ H + (aq) + HCO 2 - (aq), the acid dissociation constant at 298.15K has the value K a = 1.77 *10 -4 . (a) Find t
Is AlCl 3 polar.........? If not then why does it react with H 2 O? Also is NaCl non polar?How to decide whether a given compound is polar or not?? solution) If a bond is between
Q. A sample of water analysis was found to contain temporary magnesium hardness 25 mg/L. Permanent magnesium chloride hardness 15 mg/L and permanent calcium sulphate hardness 20
(a) Write the structural formula of 3-phenylprop-2-enal. (b) Write one chemical equation each to illustrate the following reactions: (i) Aldol condensation (ii) Cannizzaro
why we take carbon 12 as standard?
acetaldehyde to cronic acid
Voltammetry: You learnt about voltammetry. Several electrodes, especially the general microelectrodes used in voltammetry were discussed. Then we discussed the common voltamme
Most of the transition metal do not displace hydrogen from dilut acid. why? Ans) The activity series of transition metals is less than that of hydrogen so they can not displace h
What are liquid crystals? Give examples. Liquid crystals are an intermediate state among liquid state and solid state. They exhibit some characteristic properties of both soli
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