ATOMIC & MOLECULAR RELATIVE MASS

Apakah jisim formula relatif bagi ammonium nitrat NH₄NO₃?

What is the relative formula mass of ammonium nitrate, NH4NO3 ?

[Relative atomic mass: N, 14; H, 1; O, 16]

• 76

• 79

• 80

• 90

Apakah jisim formula relatif magnesium sulfat terhidrat?

What is the relative formula mass of hydrated magnesium sulphate, MgSO₄.7H₂O?

[Relative atomic mass : H = 1, O = 16, Mg = 24 , S = 32]

• 145

• 150

• 239

• 246

Jisim tiga atom unsur Y adalah sama dengan jisim 4 atom karbon. Y bukan simbol sebenar unsur tersebut.

The mass of three atoms of element Y is equal to the mass of four carbon atoms. Y is not actual symbol of the element.

Apakah jisim atom relatif bagi unsur Y?

What is the relative atomic mass of element Y?

[ Relative atomic mass : C = 12 ]

• 12

• 16

• 36

• 48

Jisim atom relatif bagi suatu unsur adalah bilangan kali

The relative atomic mass of an element is the number

of times

• Jisim atom lebih besar daripada jisim satu atom karbon-12

  The mass of an atom is greater than the mass of one

  carbon-12 atom

• Jisim atom lebih besar daripada jisim satu atom oksigen

  The mass of an atom is greater than the mass of one

  oxygen atom

• Jisim atom lebih besar daripada 1/12 jisim satu atom karbon-12

  The mass of an atom is greater than 1 /12 of the

  mass of one carbon-12 atom

• Jisim satu molekul lebih besar daripada 1/12 jisim satu atom karbon -12

  The mass of an molecule is greater than 1/12 of the

  mass of one carbon-12 atom

jisim formula relatif X karbonat terhidrat , X₂CO₃.10H₂O adalah 286. Berapakah jisim atom relatif bagi unsur X?

The relative formula mass hydrated X carbonate. X₂CO₃.10H₂O is 286. What is the relative atomic mass of element X?

[Relative atomic mass: H=1, C=12, O=16]

• 23

• 46

• 120

• 240

Berapa kali berat kah 2 atom kuprum berbanding satu atom oksigen ?

How many times are 2 copper atoms heavier than an oxygen atom?

[Relative atomic mass: O=16, Cu=64]

• 4

• 8

• 16

• 64

Jisim tiga atom unsur X adalah sama dengan jisim 4 atom karbon. X bukan simbol sebenar unsur tersebut.

The mass of three atoms of element X is equal to the mass of four carbon atoms. X is not the actual symbol of the element.

Apakah jisim atom relatif unsur X?

What is the relative atomic mass of element X? [Relative atomic mass of C=12]

• 48

• 36

• 16

• 12

Purata jisim magnesium adalah 24kali lebih besar daripada jisim 1/12 satu atom karbon.

The average mass of a magnesium is 24 times greater than of the mass of 1/12 of a carbon 12 atom.

apakah jisim atom relatif bagi magnesium ?

What is the relative atomic mass of magnesium?

• 2

• 12

• 24

• 48

Mengapakah karb0n-12 dipilih sebagai rujukan piawai bagi jisim atom relatif dan jisim molekul relatif?

Why carbon-12 was chosen as a reference standard for relative atomic mass and relative molecular mass?

• Karbon mempunyai tiga isotop

  Carbon has three isotopes

• Karbon adalah unsur bukan logam

  Carbon is non-metal element

• Karbon adalah pepejal dan mudah dikendalikan

  Carbon is a solid and easier to be handle

• Karbon terletak dalam Kumpulan 14 dalam Jadual Berkala Unsur

  Carbon is located in Group 14 in the Periodic Table of Elements

Unsur J dan unsur Q masing-masing mempunyai nombor proton 12 dan 9 . apakah jisim formula relatif sebatian J dan Q?

Element J and element Q have proton number of 12 and 9 respectively. What is the relative formula mass of a compound formed between J and Q?

[Relative atomic mass: J = 24; Q = 19]

• 30

• 43

• 62

• 67