Which equation represents sublimation?

CaCO 3 (s)+2HCl(aq)→CaCl 2 (aq)+CO 2 (g)+H 2 O(l)

Which solution neutralizes 50.0 cm 3 of 0.120 mol dm –3 NaOH (aq)?

25.0 cm 3 of 0.120 mol dm –3 H 2 SO 4

12.5 cm 3 of 0.080 mol dm –3 H 3 PO 4

25.0 cm 3 of 0.120 mol dm –3 CH 3 COOH

50.0 cm 3 of 0.060 mol dm –3 HNO 3

Which sample contains the largest amount, in mol, of oxygen atoms?

0.20 m o l P 2 O 5 0.20\ mol\ P_2O_5 0 . 2 0 m o l P 2 O 5

0.3 m o l O 3 0.3\ mol\ O_3 0 . 3 m o l O 3

0.4 m o l C H 3 C O O H 0.4\ mol\ CH_3COOH 0 . 4 m o l C H 3 C O O H

0.8 m o l H 2 O 0.8\ mol\ H_2O 0 . 8 m o l H 2 O

What is the total number of protons and electrons in one mole of hydrogen gas?

2.4 x 1 0 24 2.4\ x\ 10^{24} 2 . 4 x 1 0 2 4

1.2 x 1 0 24 1.2\ x\ 10^{24} 1 . 2 x 1 0 2 4

The structural formula of a dioxin is shown below. What is its empirical formula?

C 12 H 8 O C_{12}H_8O C 1 2 H 8 O

Which contains the largest number of ions?

2 m o l e s o f K 3 P O 4 2\ moles\ of\ K_3PO_4 2 m o l e s o f K 3 P O 4

1 m o l e o f A l 2 ( S O 4 ) 3 1\ mole\ of\ Al_2\left(SO_4\right)_3 1 m o l e o f A l 2 ( S O 4 ) 3

1 m o l e o f M g 3 ( P O 4 ) 2 1\ mole\ of\ Mg_3\left(PO_4\right)_2 1 m o l e o f M g 3 ( P O 4 ) 2

3 m o l e s o f N a N O 3\ moles\ of\ NaNO 3 m o l e s o f N a N O

Which is the best description of relative atomic mass, A r ?

The weighted mean mass of naturally occurring isotopes of an element compared to 1/12 th of the mass of an atom of carbon-12

The number of neutrons and protons present in the nucleus of an atom

The average number of neutrons and protons in all isotopes of an element

The weighted mean mass of naturally occurring isotopes of an element compared to the mass of an atom of carbon-12

Which sample has the greatest mass?

2 m o l o f N 2 O 2\ mol\ of\ N_2O 2 m o l o f N 2 O

1 m o l o f S O 2 1\ mol\ of\ SO_2 1 m o l o f S O 2

2 m o l o f A r 2\ mol\ of\ Ar 2 m o l o f A r

4 m o l o f N H 3 4\ mol\ of\ NH_3 4 m o l o f N H 3

Which molecular formula is also an empirical formula?

C 6 H 12 O 6 C_6H_{12}O_6 C 6 H 1 2 O 6

Topic 1 SL Chemistry Stoichiometry

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11th - 12th Grade

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MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is the sum of the coefficients when the equation is balanced with whole numbers?
MnO₂ (s) + HCl (aq) → MnCl₂ (aq) + H₂O (l) + __Cl₂ (g)

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which is correct?

Mixtures are either homogeneous or heterogeneous and their chemical properties are an average of the individual component properties.

Mixtures are never heterogeneous and their chemical properties are an average of the individual component properties.

Mixtures are either homogeneous or heterogeneous and the components retain their individual chemical properties.

Mixtures are never homogeneous and the components retain their individual chemical properties.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is the sum of the coefficients when the equation is balanced with the smallest whole numbers?
BaCl₂ (aq) + Fe₂(SO₄)₃ (aq) → FeCl₃ (aq) + BaSO₄ (s)

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is the sum of the integer coefficients when propene undergoes complete combustion?
C₃H₆ (g) + O₂ (g) → CO₂ (g) + H₂O (l)

Which diagram represents a heterogeneous mixture?

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which is a homogeneous mixture?

Oil and water

Sand and water

Ethanol and water

Chalk and sand

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is the sum of the coefficients when the equation is balanced with the lowest whole number ratio?
Na₂S₂O₃(aq) + HCl(aq) → S(s) + SO₂(g) + NaCl(aq) + H₂O(l)

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Topic 1 SL Chemistry Stoichiometry

What is the sum of the coefficients when the equation is balanced with whole numbers?
MnO₂ (s) + HCl (aq) → MnCl₂ (aq) + H₂O (l) + __Cl₂ (g)

Which is correct?

What is the sum of the coefficients when the equation is balanced with the smallest whole numbers?
BaCl₂ (aq) + Fe₂(SO₄)₃ (aq) → FeCl₃ (aq) + BaSO₄ (s)

What is the sum of the integer coefficients when propene undergoes complete combustion?
C₃H₆ (g) + O₂ (g) → CO₂ (g) + H₂O (l)

Which diagram represents a heterogeneous mixture?

Which is a homogeneous mixture?

What is the sum of the coefficients when the equation is balanced with the lowest whole number ratio?
Na₂S₂O₃(aq) + HCl(aq) → S(s) + SO₂(g) + NaCl(aq) + H₂O(l)

What is the sum of the coefficients when the following equation is balanced using the smallest whole numbers?
C₆H₁₂O₆ (aq) → C₂H₅OH (aq) + __CO₂ (g)

Which statements about mixtures are correct?
I.The components may be elements or compounds.
II.All components must be in the same phase.
III.The components retain their individual properties.

What is the sum of the coefficients when the equation is balanced with whole numbers?
_—C₈H₁₈(g) + _—O₂(g) → _—CO(g) + _—H₂O(l)

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Topic 1 SL Chemistry Stoichiometry

What is the sum of the coefficients when the equation is balanced with whole numbers?__MnO2 (s) + __HCl (aq) → __MnCl2 (aq) + __H2O (l) + __Cl2 (g)

Which is correct?

What is the sum of the coefficients when the equation is balanced with the smallest whole numbers?__BaCl2 (aq) + __Fe2(SO4)3 (aq) → __FeCl3 (aq) + __BaSO4 (s)

What is the sum of the integer coefficients when propene undergoes complete combustion?__C3H6 (g) + __O2 (g) → __CO2 (g) + __H2O (l)

Which diagram represents a heterogeneous mixture?

Which is a homogeneous mixture?

What is the sum of the coefficients when the equation is balanced with the lowest whole number ratio?__Na2S2O3(aq) + __HCl(aq) → __S(s) + __SO2(g) + __NaCl(aq) + __H2O(l)

What is the sum of the coefficients when the following equation is balanced using the smallest whole numbers?__C6H12O6 (aq) → __C2H5OH (aq) + __CO2 (g)

Which statements about mixtures are correct?I.The components may be elements or compounds.II.All components must be in the same phase.III.The components retain their individual properties.

What is the sum of the coefficients when the equation is balanced with whole numbers?—C8H18(g) + —O2(g) → —CO(g) + —H2O(l)

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What is the sum of the coefficients when the equation is balanced with whole numbers?
MnO₂ (s) + HCl (aq) → MnCl₂ (aq) + H₂O (l) + __Cl₂ (g)

What is the sum of the coefficients when the equation is balanced with the smallest whole numbers?
BaCl₂ (aq) + Fe₂(SO₄)₃ (aq) → FeCl₃ (aq) + BaSO₄ (s)

What is the sum of the integer coefficients when propene undergoes complete combustion?
C₃H₆ (g) + O₂ (g) → CO₂ (g) + H₂O (l)

What is the sum of the coefficients when the equation is balanced with the lowest whole number ratio?
Na₂S₂O₃(aq) + HCl(aq) → S(s) + SO₂(g) + NaCl(aq) + H₂O(l)

What is the sum of the coefficients when the following equation is balanced using the smallest whole numbers?
C₆H₁₂O₆ (aq) → C₂H₅OH (aq) + __CO₂ (g)

Which statements about mixtures are correct?
I.The components may be elements or compounds.
II.All components must be in the same phase.
III.The components retain their individual properties.

What is the sum of the coefficients when the equation is balanced with whole numbers?
_—C₈H₁₈(g) + _—O₂(g) → _—CO(g) + _—H₂O(l)