8. MASĖS DALIS JUNGINYJE (2024)

8. MASĖS DALIS JUNGINYJE (2024)

1st - 10th Grade

11 Qs

quiz-placeholder

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8. MASĖS DALIS JUNGINYJE (2024)

8. MASĖS DALIS JUNGINYJE (2024)

Assessment

Quiz

Chemistry

1st - 10th Grade

Practice Problem

Hard

Created by

Vygandas Marozas

Used 8+ times

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11 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Kokios yra kalio ir bromo masės dalys kalio bromide (KBr)?

K 23%, Br 77%

K 67%, Br 33%

K 33%, Br 67%

K 13%, Br 87%

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Kokios masės dalys kalcio ir deguonies yra kalcio okside (CaO)?

Ca 71%,O 29%

Ca 31%,O 69%

Ca 29%,O 71%

Ca 21%,O 79%

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Kokia masės dalis bromo yra vandenilio bromide HBr ir natrio bromide NaBr?

NaBr bromo masės dalis 99%, o HBr - 78%

HBr bromo masės dalis 65%, o NaBr - 98%

HBr bromo masės dalis 89%, o NaBr - 87%

HBr bromo masės dalis 99%, o NaBr - 78%

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Kuriame junginyje deguonies masės dalis yra mažesnė: sieros diokside (SO2) ar azoto diokside (NO2)?

SO2

NO2

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Kuriame junginyje sieros masės dalis yra didžiausia: vandenilio sulfide (H2S), sieros triokside (SO3), ar sieros rūgštyje (H2SO4)?

H2S

H2SO4

SO3

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Apskaičiuokite: kalcio, sieros ir deguonies masės dalis kalcio sulfate CaSO4.

Ca 47%, O 24%, S 29%

Ca 24%, O 47%, S 29%

Ca 29%, O 47%, S 24%

Ca 47%, O 29%, S 24%

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Kokia yra deguonies masės dalis kalio hidrokside (KOH).

28,57%

50%

40,1%

32,5%

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