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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.
where is the asterisk located
What are the main sources of electrical resistance in a metal? The factors which affect electrical resistance of a metal are impurity, temperature and alloying. Free mean path o
Alkaline earth metals: The elements Be, Mg, Ca, Sr, Ba and Ra belong to II A group. 2. II A group elements are also called alkaline earth metals. 3. The valence electron
show me mechanism of stille reactin
In this synthesis of indole the addition of keto thioether to choloroamine to give sulphonium ion. this reaction is carried out at low temperature . why?
#notes
write summarized report on s block elements characteristics and properties
what is cis-trans isomerisation?
An organic compound is any member of a large class of chemical compounds which molecules have carbon and hydrogen; thus, carbides, carbonates, carbon oxides and elementary carbon
Give detail about criteria of purity ?
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