1.Ce masa de solutie de concentratie 15% se obtine dizolvand 60g zahar in apa?
A. 300gr
B. 400gr
C. 200gr

2.Ce concentratie va avea solutia rezultata prin adaugarea 200g apa peste 400 g solutie de concentratie initiala 24%?

A. 16%
B. 17%
C. 20%

3.Care este volumul solutiei de acid sulfuric 0,5 M obtinuta din 49 g acid sulfuric?

A. 2L
B. 3L
C. 1L

In the derivation of rrkm theory, a factor of 1/2 is introduced when equalizing the rates of formation and decomposition of activated complex as keal-hr) = ko this is clearly against the assumption of transition state theory that states all the activated complex in the transition state iss going to the product. find the reason why this factor is introduced here.

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?

Matter that emits no light at any wavelength is called