
Chimie - Soluții(exerciții și probleme)probl

Quiz
•
Chemistry
•
7th Grade
•
Hard
Irina Tomoiagă
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
În soluția de saramură, sarea este
dizolvat
dizolvant
solvent
niciun răspuns corect
2.
FILL IN THE BLANK QUESTION
10 sec • 1 pt
Solul este un amestec..... .
3.
MULTIPLE SELECT QUESTION
5 sec • 1 pt
Reprezintă o soluție:
alcool+apă
apă+pilitură de fier
ser fiziologic
apă+pulbere de sulf
4.
OPEN ENDED QUESTION
5 mins • 1 pt
Calculează masa de sodă caustică din 200 ml soluţie de concentraţie 12% şi densitate 1,115 g/cm3.
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5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Soluția de concentrație 45% alcool conține :
45 g de alcool în 55g apă
45 g de alcool în 100g soluție
55 g apă
45 g de alcool în 100g apă
6.
OPEN ENDED QUESTION
5 mins • 1 pt
Calculează volumul soluţiei de acid clorhidric 30% ce conţine 16 g acid (ρ acid clorhidric=1,152 g/ml).
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7.
OPEN ENDED QUESTION
5 mins • 1 pt
Din 175 g soluţie de concentraţie 8% s-au evaporat 30 g apă.Determină concentraţia soluţiei obţinute.
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