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Question 1 of 9
1. Question
1 point(s)What is the mass of bromine that contains 1.806 x 10²³ of bromine molecules?
[Relative atomic mass: Br = 80; Avogadro constant = 6.02 x 10²³]- 1.
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Question 2 of 9
2. Question
1 point(s)What is the volume of 0.8 mol of hydrogen gas at s.t.p.? (Molar volume of gas at s.t.p. = 22.4 dm³)
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Question 3 of 9
3. Question
1 point(s)Find the mass of fluorine gas (F₂) that has an equal number of molecules as 4g of oxygen gas (O₂). [Relative atomic mass: O = 16, F = 19]
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Question 4 of 9
4. Question
1 point(s)Find the number of particle in 1200cm³ of nitrogen gas at room temperature.
[Avogadro constant = 6.02 x 10²³; Molar volume of gas at r.t.p. = 24 dm³]- 1.
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Question 5 of 9
5. Question
1 point(s)What is the mass of 3.5 mol Phosphorous?
[Relative atomic mass: P = 31]- 1.
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Question 6 of 9
6. Question
1 point(s)What is the number of mole of atoms in 6g of carbon? [Relative atomic mass: C: 12]
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Question 7 of 9
7. Question
1 point(s)Find the number of mole of molecules in 12,000 cm³ of nitrogen gas at room temperature and pressure.
[Molar volume of gases at r.t.p. = 24dm³]- 1.
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Question 8 of 9
8. Question
1 point(s)How many particles are there in 16g of oxygen molecules?
[ Relative atomic mass: O =16; Avogadro Number = 6.02 x 10²³]- 1.
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Question 9 of 9
9. Question
1 point(s)What is the volume occupied by 8.0g of hydrogen gas at room temperature and pressure?
[Ar: H = 1; Molar volume of gas at r.t.p. = 24,000cm³]- 1.
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