Four grams of caustic soda contains: (a) 6.02 x 10 23 atoms of it (b) 4 g atom of sodium (c) 6.02 x 10 22 molecules (d) 4 moles of NaOH

6.02 × 10 22 molecule Reason Molar mass of NaOH = Na + O + H = 23 + 16 + 1 = 40 g 40 g of NaOH contains 6.022 × 10 23 molecules 4 g of NaOH contains = x 4 = 6.02 × 10 22 molecules

Nitrogen and hydrogen react to form ammonia.
N₂ (g) + 3H₂ (g) ⟶ 2NH₃ (g)
If 1000 g of H₂ react with 2000 g of N₂:
(a) Will any of the two reactants remain unreacted? If yes, which one and what will be it's mass?
(b) Calculate the mass of ammonia (NH₃) that will be formed?

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Which of the following weighs the least?
(a) 2 g atom of N
(b) 3 x 10²⁵ atoms of carbon
(c) 1 mole of sulphur
(d) 7 g of silver

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The number of molecules in 4.25 g of ammonia is:
(a) 1.0 × 10²³
(b) 1.5 × 10²³
(c) 2.0 × 10²³
(d) 3.5 × 10²³

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A gas cylinder of capacity of 20 dm³ is filled with gas X the mass of which is 10 g. When the same cylinder is filled with hydrogen gas at the same temperature and pressure the mass of the hydrogen is 2 g, hence the relative molecular mass of the gas is :
5
10
15
20

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Chemistry

Four grams of caustic soda contains:
(a) 6.02 x 10²³ atoms of it
(b) 4 g atom of sodium
(c) 6.02 x 10²² molecules
(d) 4 moles of NaOH

Mole Concept

Related Questions

Nitrogen and hydrogen react to form ammonia.
N₂ (g) + 3H₂ (g) ⟶ 2NH₃ (g)
If 1000 g of H₂ react with 2000 g of N₂:
(a) Will any of the two reactants remain unreacted? If yes, which one and what will be it's mass?
(b) Calculate the mass of ammonia (NH₃) that will be formed?

Which of the following weighs the least?
(a) 2 g atom of N
(b) 3 x 10²⁵ atoms of carbon
(c) 1 mole of sulphur
(d) 7 g of silver

The number of molecules in 4.25 g of ammonia is:
(a) 1.0 × 10²³
(b) 1.5 × 10²³
(c) 2.0 × 10²³
(d) 3.5 × 10²³

A gas cylinder of capacity of 20 dm³ is filled with gas X the mass of which is 10 g. When the same cylinder is filled with hydrogen gas at the same temperature and pressure the mass of the hydrogen is 2 g, hence the relative molecular mass of the gas is :
5
10
15
20

Chemistry

Four grams of caustic soda contains:(a) 6.02 x 1023 atoms of it(b) 4 g atom of sodium(c) 6.02 x 1022 molecules(d) 4 moles of NaOH

Mole Concept

Related Questions

Nitrogen and hydrogen react to form ammonia.N2 (g) + 3H2 (g) ⟶ 2NH3 (g)If 1000 g of H2 react with 2000 g of N2:(a) Will any of the two reactants remain unreacted? If yes, which one and what will be it's mass?(b) Calculate the mass of ammonia (NH3) that will be formed?

Which of the following weighs the least?(a) 2 g atom of N(b) 3 x 1025 atoms of carbon(c) 1 mole of sulphur(d) 7 g of silver

The number of molecules in 4.25 g of ammonia is:(a) 1.0 × 1023(b) 1.5 × 1023(c) 2.0 × 1023(d) 3.5 × 1023

A gas cylinder of capacity of 20 dm3 is filled with gas X the mass of which is 10 g. When the same cylinder is filled with hydrogen gas at the same temperature and pressure the mass of the hydrogen is 2 g, hence the relative molecular mass of the gas is :5101520

Four grams of caustic soda contains:
(a) 6.02 x 10²³ atoms of it
(b) 4 g atom of sodium
(c) 6.02 x 10²² molecules
(d) 4 moles of NaOH

Nitrogen and hydrogen react to form ammonia.
N₂ (g) + 3H₂ (g) ⟶ 2NH₃ (g)
If 1000 g of H₂ react with 2000 g of N₂:
(a) Will any of the two reactants remain unreacted? If yes, which one and what will be it's mass?
(b) Calculate the mass of ammonia (NH₃) that will be formed?

Which of the following weighs the least?
(a) 2 g atom of N
(b) 3 x 10²⁵ atoms of carbon
(c) 1 mole of sulphur
(d) 7 g of silver

The number of molecules in 4.25 g of ammonia is:
(a) 1.0 × 10²³
(b) 1.5 × 10²³
(c) 2.0 × 10²³
(d) 3.5 × 10²³

A gas cylinder of capacity of 20 dm³ is filled with gas X the mass of which is 10 g. When the same cylinder is filled with hydrogen gas at the same temperature and pressure the mass of the hydrogen is 2 g, hence the relative molecular mass of the gas is :
5
10
15
20