Hafaliad y mol

Hafaliad y mol

8th - 10th Grade

12 Qs

quiz-placeholder

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Hafaliad y mol

Hafaliad y mol

Assessment

Quiz

Chemistry

8th - 10th Grade

Practice Problem

Hard

Created by

E Evans

Used 19+ times

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12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

nifer y molau =

màs ÷ MR

MR ÷ màs

màs x MR

MR x màs

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

2Na + Cl2 --> 2NaCl

Os oes gennych nifer y molau o sodiwm, bydd nifer y molau o glorin yn:

hanner nifer y molau sodiwm

dwbl nifer y molau sodiwm

yr un peth a nifer y molau sodiwm

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ca + Cl2 --> CaCl2

Os oes gennych nifer y molau o galsiwm, bydd nifer y molau o glorin yn:

hanner nifer y molau calsiwm

dwbl nifer y molau calsiwm

yr un peth a nifer y molau calsiwm

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

C3H8 + 5O2 --> 3CO2 + 4H2O


Os oes gen i 2 fol o bropan (C3H8)

Sawl mol o ocsigen bydd angen arnaf i gael adwaith gyflawn?

2

5

10

6

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

C3H8 + 5O2 --> 3CO2 + 4H2O


Mae gennyf 132g o bropan (C3H8) Sawl mol sydd gennyf?

AR C = 12, AR H = 1.

2

0.5

0.33

3

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

C3H8 + 5O2 --> 3CO2 + 4H2O


Mae gennyf 132g o bropan (C3H8) MR = 44.

Faint o folau o CO2 bydd hwn yn creu?

AR C = 12, AR H = 1.

6

9

12

3

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Dewiswch y brawddegau cywir am MR:

Màs moleciwl i gymharu gyda sylweddau eraill yw MR

Mae angen lluosi'r nifer o atomau gyda'r rhif mawr ar y dechrau i gael MR

Mae angen cyfrifo cyfanswm y rhifau màs ar gyfer pob atom mewn un moleciwl i gael MR

MR H2 = 1

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