IB Chemistry - Stoichiometry

Authored by Audrey Kua

Chemistry

11th - 12th Grade

NGSS covered

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

Silicone reacts with chlorine to for silicone tetrachloride, as shown in the following equation
Si(s) + Cl₂(g) ---> SiCl₄(l)
Calculate the mass of silicone tetrachloride obtained from 10.0g of silicon. [RAM: Si = 28, Cl = 35.5]

60.7g

170.0g

35.7g

121.4g

Tags

NGSS.HS-PS1-7

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Silicone reacts with chlorine to for silicone tetrachloride, as shown in the following equation
Si(s) + Cl₂(g) ---> SiCl₄(l)
Calculate the minimum volume of chlorine that would be required to react completely with 10.0g of silicon. [1 mol of gas occupies 24dm³ under the conditions of the experiment]

8.57dm³

17.1dm³

67.2dm³

8.0dm³

Tags

NGSS.HS-PS1-7

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Bromine consists of two isotopes, ⁷⁹Br (relative abundance 50.5%) and ⁸¹Br (relative abundance 49.5%). Calculate the relative atomic mass of Br.

79.99g/mol

80.01g/mol

79.98g/mol

80.00g/mol

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A white powder used in paints, enamels and ceramics has the following mass percentage composition: Ba, 69.6% ; C, 6.09% and O, 24.3%. What is its empirical formula? (M_Ba = 137.3gmol^-1, M_C = 12.01gmol_-1, M_O = 16.00gmol^-1)

BaCO₂

Ba₂CO₂

BaCO₃

Ba₂CO₃

Tags

NGSS.HS-PS1-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Bone and dental implants are often coated with calcium phosphate, Ca₃(PO₄)₂, to permit bone to bond with the implant surface. If a coating process can deposit 0.115 mole of pure Ca₃(PO₄)₂ on an implant, what is the mass of the coating? Given that the molar mass of Ca is 40.08gmol^-1, P is 30.97gmol^-1 and O is 16.00gmol^-1.

31.1g

15.5g

24.7g

35.7g

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Estimate the mass of A required to completely react with 10 moles of B, given the following information:
i. A and B react to form A₅B₂
ii. A has a molar mass of 100.0gmol^-1
iii. B has a molar mass of 200.0gmol^-1

2.5kg

5.0kg

3.5kg

6.0kg

Tags

NGSS.HS-PS1-7

MULTIPLE CHOICE QUESTION

1 min • 1 pt

C₂H₂(g) + O₂(g) → CO₂(g) + H₂O(g)
When the equation above is balanced, what is the coefficient for oxygen?

Tags

NGSS.HS-PS1-7

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IB Chemistry - Stoichiometry

Silicone reacts with chlorine to for silicone tetrachloride, as shown in the following equation
Si(s) + Cl₂(g) ---> SiCl₄(l)
Calculate the mass of silicone tetrachloride obtained from 10.0g of silicon. [RAM: Si = 28, Cl = 35.5]

Bromine consists of two isotopes, ⁷⁹Br (relative abundance 50.5%) and ⁸¹Br (relative abundance 49.5%). Calculate the relative atomic mass of Br.

A white powder used in paints, enamels and ceramics has the following mass percentage composition: Ba, 69.6% ; C, 6.09% and O, 24.3%. What is its empirical formula? (M_Ba = 137.3gmol^-1, M_C = 12.01gmol_-1, M_O = 16.00gmol^-1)

Estimate the mass of A required to completely react with 10 moles of B, given the following information:
i. A and B react to form A₅B₂
ii. A has a molar mass of 100.0gmol^-1
iii. B has a molar mass of 200.0gmol^-1

C₂H₂(g) + O₂(g) → CO₂(g) + H₂O(g)
When the equation above is balanced, what is the coefficient for oxygen?

What amount of oxygen, O₂, (in moles) contains 1.8 ×10²² molecules?

3.0 dm₃ of sulfur dioxide is reacted with 2.0 dm₃ of oxygen according to the equation below.
2SO₂(g) +O₂(g) → 2SO₃(g)
What volume of sulfur trioxide (in dm³) is formed? (Assume the reaction goes to completion and all gases are measured at the same temperature and pressure.)

Sodium reacts with water as follows.

2Na(s) + 2H₂O(l) ® 2NaOH(aq) + H₂(g)

1.15 g of sodium is allowed to react completely with water. The resulting solution is diluted to 250 cm³. Calculate the concentration, in mol/dm³, of the resulting sodium hydroxide solution.

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IB Chemistry - Stoichiometry

Silicone reacts with chlorine to for silicone tetrachloride, as shown in the following equationSi(s) + Cl2(g) ---> SiCl4(l)Calculate the mass of silicone tetrachloride obtained from 10.0g of silicon. [RAM: Si = 28, Cl = 35.5]

Silicone reacts with chlorine to for silicone tetrachloride, as shown in the following equationSi(s) + Cl2(g) ---> SiCl4(l)Calculate the minimum volume of chlorine that would be required to react completely with 10.0g of silicon. [1 mol of gas occupies 24dm3 under the conditions of the experiment]

Bromine consists of two isotopes, 79Br (relative abundance 50.5%) and 81Br (relative abundance 49.5%). Calculate the relative atomic mass of Br.

A white powder used in paints, enamels and ceramics has the following mass percentage composition: Ba, 69.6% ; C, 6.09% and O, 24.3%. What is its empirical formula? (MBa = 137.3gmol-1, MC = 12.01gmol-1, MO = 16.00gmol-1)

Estimate the mass of A required to completely react with 10 moles of B, given the following information: i. A and B react to form A5B2 ii. A has a molar mass of 100.0gmol-1 iii. B has a molar mass of 200.0gmol-1

__C2H2(g) + __O2(g) → __ CO2(g) + __ H2O(g)When the equation above is balanced, what is the coefficient for oxygen?

What amount of oxygen, O2, (in moles) contains 1.8 ×1022 molecules?

3.0 dm3 of sulfur dioxide is reacted with 2.0 dm3 of oxygen according to the equation below.2SO2(g) +O2(g) → 2SO3(g)What volume of sulfur trioxide (in dm3) is formed? (Assume the reaction goes to completion and all gases are measured at the same temperature and pressure.)

Sodium reacts with water as follows.2Na(s) + 2H2O(l) ® 2NaOH(aq) + H2(g)1.15 g of sodium is allowed to react completely with water. The resulting solution is diluted to 250 cm3. Calculate the concentration, in mol/dm3, of the resulting sodium hydroxide solution.

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Similar Resources on Wayground

Popular Resources on Wayground

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Silicone reacts with chlorine to for silicone tetrachloride, as shown in the following equation
Si(s) + Cl₂(g) ---> SiCl₄(l)
Calculate the mass of silicone tetrachloride obtained from 10.0g of silicon. [RAM: Si = 28, Cl = 35.5]

Bromine consists of two isotopes, ⁷⁹Br (relative abundance 50.5%) and ⁸¹Br (relative abundance 49.5%). Calculate the relative atomic mass of Br.

A white powder used in paints, enamels and ceramics has the following mass percentage composition: Ba, 69.6% ; C, 6.09% and O, 24.3%. What is its empirical formula? (M_Ba = 137.3gmol^-1, M_C = 12.01gmol_-1, M_O = 16.00gmol^-1)

Estimate the mass of A required to completely react with 10 moles of B, given the following information:
i. A and B react to form A₅B₂
ii. A has a molar mass of 100.0gmol^-1
iii. B has a molar mass of 200.0gmol^-1

C₂H₂(g) + O₂(g) → CO₂(g) + H₂O(g)
When the equation above is balanced, what is the coefficient for oxygen?

What amount of oxygen, O₂, (in moles) contains 1.8 ×10²² molecules?

3.0 dm₃ of sulfur dioxide is reacted with 2.0 dm₃ of oxygen according to the equation below.
2SO₂(g) +O₂(g) → 2SO₃(g)
What volume of sulfur trioxide (in dm³) is formed? (Assume the reaction goes to completion and all gases are measured at the same temperature and pressure.)

Sodium reacts with water as follows.

2Na(s) + 2H₂O(l) ® 2NaOH(aq) + H₂(g)

1.15 g of sodium is allowed to react completely with water. The resulting solution is diluted to 250 cm³. Calculate the concentration, in mol/dm³, of the resulting sodium hydroxide solution.