Stężenia 1
Quiz
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Danuta Tokarczyk
Used 111+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Oblicz stężenie procentowe 400 g roztworu 40%, jeżeli dolejemy 50 g wody
35,55 %
45 %
24,44%
27,5%
2.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
Oblicz stężenie procentowe 200 g roztworu 30% , jeżeli wykrystalizuje 30 g soli.
3.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
Ile moli kwasu fosforowego (V) znajduje się w 200 cm3 20% roztworu, o gęstości 1,8 g/ cm3
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Oblicz stężenie molowe nadtlenku wodoru o stężeniu procentowym 30% i gęstości 1,1 g/ cm3
9,97 mol/dm3
10 mol/dm3
20 mol/dm3
6,9 mol/dm3
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Oblicz stężenie molowe kwasu azotowego (III) o gęstości 1,7 g/cm3 i stężeniu procentowym 50%
30 mol/dm3
18,09 mol/dm3
21 mol/dm3
17.04 mol/dm3
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Oblicz ile gramów CaHPO3 znajduje się w 150 g 1.7 molowego roztworu o gęstości 1,2 g/ dm3
28,2 g
60 g
25,5 g
18,5 g
7.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Co to jest stężenie procentowe ( 2)
jest to liczba gramów substancji rozpuszczonej w 100 g roztworu
jest to wyrażony w procentach stosunek masy substancji rozpuszczonej do masy roztworu
jest to liczba gram substancji rozpuszczona w 100 g rozpuszczalnika
jest to 100 gramów substancji rozpuszczona w pewnej liczbie gram rozpuszczalnika
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