Mock Test F4 Calculations Chemistry

Jisim molekul relatif bagi M2(SO4)3 ialah 342. Berapakah jisim atom relatif bagi unsur M? [Jisim atom relatif: O = 16, S = 32]

The relative molecular mass of M2(SO4)3 is 342. What is the relative atomic mass of

element M?

[Relative atomic mass: O = 16, S = 32]

• 27

• 54

• 118

• 123

Berapakah bilangan mol kuprum(II) nitrat dalam 56.4 g kuprum (II) nitrat Cu(NO3)2?[Jisim atom relatif : O = 16, Cu = 64, N = 14].

What is the number of moles of copper(II) nitrate in 56.4 g of copper(II) nitrate,

Cu(NO3)2?

[Relative atomic mass: O = 16, Cu = 64, N = 14].

• 0.30 mol

• 0.32 mol

• 0.45 mol

• 3.33 mol

Formula bagi ion sulfat adalah SO4^2-

dan ion nitrat adalah NO3-

Jika formula garam sulfat bagi M ialah MSO4, apakah formula garam nitrat bagi M?

The formula for a sulphate ion is SO4^2-

and for a nitrate is NO3-

If the formula of the sulphate salt of M is MSO4, what is the formula of the nitrate salt of

M?

• MNO3

• M2NO3

• M(NO3)2

• M(NO3)3

Sebatian manakah yang mempunyai formula yang betul?

Which compound has the correct formula?

• Barium Nitrat

  Barium Nitrate

  Ba(NO3)2

• Plumbum(II) oksida

  Lead(II) oxide

  PbO2

• Kuprum(II) oksida

  Copper(II) oxide

  Cu2O

• Argentum karbonat

  Silver carbonate

  AgCO3

Persamaan berikut mewakili satu tindak balas .

The following equation represents a reaction.

Cu(OH)2 + 2HNO3 --> Cu(NO3)2 + 2H2O

Apakah bahan – bahan tindak balas dalam persamaan ini?

What are the reactants in this equation?

• Kuprum(II) nitrat dan air

  Copper(II) nitrate and water

• Kuprum(II) nitrat dan asid nitrik

  Copper(II) nitrate and nitric acid

• Kuprum(II) hidroksida dan asid nitrik

  Copper(II) hydroxide and nitric acid

• Kuprum(II) hidroksida dan kuprum(II) nitrat

  Copper(II) hydroxide and copper(II) nitrate.

Gambar rajah menunjukkan suatu kawasan pelupusan sampah. Aktiviti mikroorganisma di kawasan itu menghasilkan 120 dm3 gas metana (CH4) The picture shows a waste disposal site. The activity of microorganisms in the waste produces methane (CH4) Berapakah jisim gas metana (CH4) yang terhasil? What is the mass of methane (CH4) produced? [Diberi jisim atom relatif, H = 1, C = 12 dan 1 mol gas menempati 24 dm3 pada suhu dan tekanan bilik] [Given that the relative atomic mass H = 1, C = 12 and 1 mol of gas occupies 24 dm3 at room temperature and pressure]

• 80 g

• 85 g

• 18 g

• 8 g

Lembu apa yang tidak makan Rumput???

Dalam banyak-banyak ikan, ikan apa tiada kepala, tiada ekor, tiada mulut?

Dalam banyak-banyak jin, jin apa yang hidup dalam air?

Terang kecil, Gelap besar. Siapakah Saya??