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MDCAT ENGLISH MCQs
Biology etea medical mcqs
etea Chemistry
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BS Nursing

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Given the reaction 4NH₃ + 5O₂ → 4NO + 6H₂O, the mole ratio of NH₃ to H₂O is:

4:05
4:6 (2:3)
5:06
4:4 (1:1)

ETEA MCQS.COM
Moles and Avogadro’s Numbers

To synthesize 0.5 moles of AlCl₃ from the reaction 2Al + 3Cl₂ → 2AlCl₃, the moles of Al required are:

0.25 moles
0.5 moles
1 mole
2 moles

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Moles and Avogadro’s Numbers

In the reaction 2Na + 2H₂O → 2NaOH + H₂, if 4 moles of Na react, ___ moles of H₂ are formed.

1 mole
2 moles
4 moles
8 moles

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Moles and Avogadro’s Numbers

For the reaction C + O₂ → CO₂, how many moles of carbon are needed to produce 22 moles of carbon dioxide?

11 moles
22 moles
44 moles
1 mole

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Moles and Avogadro’s Numbers

The balanced equation P₄ + 5O₂ → P₄O₁₀ shows that 1 mole of phosphorus reacts with ___ moles of oxygen.

1
4
5
10

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Moles and Avogadro’s Numbers

If 12 moles of NH₃ are produced in the reaction N₂ + 3H₂ → 2NH₃, the moles of N₂ used are:

4 moles
6 moles
12 moles
18 moles

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Moles and Avogadro’s Numbers

In the equation 2Al + 3Cl₂ → 2AlCl₃, the mole ratio of Al to Cl₂ is:

2:03
3:02
1:01
2:02

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Moles and Avogadro’s Numbers

For the reaction Zn + 2HCl → ZnCl₂ + H₂, 0.5 moles of Zn will produce ___ moles of H₂.

0.25 moles
0.5 moles
1 mole
2 moles

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Moles and Avogadro’s Numbers

Given 2C₂H₂ + 5O₂ → 4CO₂ + 2H₂O, the moles of O₂ needed to produce 8 moles of CO₂ are:

5 moles
8 moles
10 moles
16 moles

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Moles and Avogadro’s Numbers

In the Haber process (N₂ + 3H₂ → 2NH₃), the mole ratio serves as a conversion factor between reactants and:

Products
Catalysts
Temperature
Pressure

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Moles and Avogadro’s Numbers

To produce 1 mole of glucose (C₆H₁₂O₆) through photosynthesis (6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂), the moles of CO₂ required are:

1 mole
3 moles
6 moles
12 moles

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Moles and Avogadro’s Numbers

In the reaction 2KClO₃ → 2KCl + 3O₂, the decomposition of 2 moles of KClO₃ will produce ___ moles of O₂.

2
3
5
1.5

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Moles and Avogadro’s Numbers

The combustion of propane is given by C₃H₈ + 5O₂ → 3CO₂ + 4H₂O. If 2 moles of C₃H₈ are burned, the moles of CO₂ produced are:

2 moles
3 moles
5 moles
6 moles

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Moles and Avogadro’s Numbers

For the reaction 4Fe + 3O₂ → 2Fe₂O₃, how many moles of iron (Fe) are needed to react with 6 moles of oxygen (O₂)?

4 moles
6 moles
8 moles
12 moles

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Moles and Avogadro’s Numbers

In the reaction N₂ + 3H₂ → 2NH₃, if 6 moles of H₂ are used, the moles of NH₃ produced are:

2 moles
3 moles
4 moles
6 moles

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Moles and Avogadro’s Numbers

To produce 10 moles of water (H₂O) via the reaction 2H₂ + O₂ → 2H₂O, the moles of oxygen (O₂) required are:

10 moles
20 moles
5 moles
2 moles

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Moles and Avogadro’s Numbers

In the decomposition of calcium carbonate, CaCO₃ → CaO + CO₂, the mole ratio of CaCO₃ to CaO is:

1:02
2:01
1:01
1:03

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Moles and Avogadro’s Numbers

Given the equation CH₄ + 2O₂ → CO₂ + 2H₂O, the mole ratio of methane (CH₄) to water (H₂O) is:

1:01
1:02
2:01
1:04

ETEA MCQS.COM
Moles and Avogadro’s Numbers

For the reaction 2SO₂ + O₂ → 2SO₃, the mole ratio of SO₂ to SO₃ is:

1:01
2:01
1:02
2:03

ETEA MCQS.COM
Moles and Avogadro’s Numbers

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