Question chemists where you can get reagents ( ingredients ) ?

necessary reagents for chemical experiments, where they can get in Moscow?Need addresses of shops ... and the list .... I would like to find out more where to get props for Chemistry

What is necessary to enter a formula in place of the question mark ?

To solve the problem, you need to understand on what basis is made up a number of salts given .Then it is easy to insert a question mark instead of a suitable material .A number of such : NaCH3COO, NaBrO3,?, Na2GeO3.

What is " cool flame "?

And in what way it is achieved ?