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

Ithink the answers is b i hope it my friend message me if i’m wrong and i’ll change my answer and fix it for you

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current