Zadania 8

Zadania 8

7th Grade

6 Qs

quiz-placeholder

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Zadania 8

Zadania 8

Assessment

Quiz

Chemistry

7th Grade

Practice Problem

Medium

Created by

Piotr Gałosz

Used 9+ times

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6 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Rozpuszczalność pewnej soli - chlorku litu w temperaturze 40 stopni celsjusza wynosi 220 g na 100 g wody. Ile chlorku potasu rozpuści się w 450 g wody w tej temperaturze?

990 g

900 g

450 g

220 g

880 g

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

W temperaturze 30 stopni Celsjusza rozpuszczalność węglanu wapnia wynosi 0,001 g na 100 g wody. Ile węglanu wapnia rozpuści się w 500 g wody?

0,005 g

0,01 g

0,1 g

0,02 g

0,03 g

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Rozpuszczono 80 g soli w 240 g wody. Oblicz stężenie procentowe soli w tym roztworze.

300%

3,(3)%

33,(3)%

0,25%

25%

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

W czterech kilogramach roztworu znajduje się 20 dag cukru. Jakie stężenie procentowe ma ten syrop.

0,05%

5%

20%

50%

6%

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Zmieszano 10 kg solanki o zawartości 20% soli i 30 kg solanki o zawartości 5% soli. Ile procent soli zawiera ta mieszanina?

8,75%

25%

87,5%

2,5%

12,5%

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Rozpuszczalność soli jdku potasu w temperaturze 80 stopni Celsjusza wynosi 15,5 g na 100 g wody. Oblicz stężenie procentowe nasyconego roztworu tej soli w podanej temperaturze. Wynik podaj z dokładnością do dwóch miejsc po przecinku.

13,42%

80,00%

15,50%

0,13%

22,23%

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