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Can you explain the answer of this question below:
Which of the following pair of elements represents a mole ratio of 1:1?
- A:20 g of sodium and 20 g of calcium
- B:7 g of nitrogen and 12 gm of sodium
- C:10 g of calcium and 6 g of carbon
- D:14 g of nitrogen and 24 g of magnesium
The answer is d.
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Can you explain the answer of this question below:Which of the followi...
14 g of nitrogen = gram atomic mass of nitrogen = 1 mole of nitrogen atoms24 g of magnesium = gram atomic mass of magnesium = 1 mole of magnesium atomsSo, mole ratio = 1:1
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Can you explain the answer of this question below:Which of the followi...
Mole Ratio:
A mole ratio refers to the ratio between the number of moles of any two compounds or elements taking part in a chemical reaction. It states that for any particular reaction, the ratio between moles of reactants and products is always a whole number ratio of small integers.
Finding the Mole Ratio:
To find the mole ratio, we need to first determine the number of moles of each element or compound involved in the reaction.
The formula for calculating the number of moles is:
Number of moles = Given mass / Molar mass
Where,
Given mass is the mass of the element or compound given in the problem
Molar mass is the atomic mass or molecular mass of the element or compound
Solution:
a) 20 g of sodium and 20 g of calcium
Number of moles of sodium = 20 / 23 = 0.87 mol
Number of moles of calcium = 20 / 40 = 0.5 mol
The mole ratio of sodium to calcium is 0.87:0.5, which is not equal to 1:1.
b) 7 g of nitrogen and 12 gm of sodium
Number of moles of nitrogen = 7 / 14 = 0.5 mol
Number of moles of sodium = 12 / 23 = 0.52 mol
The mole ratio of nitrogen to sodium is 0.5:0.52, which is not equal to 1:1.
c) 10 g of calcium and 6 g of carbon
Number of moles of calcium = 10 / 40 = 0.25 mol
Number of moles of carbon = 6 / 12 = 0.5 mol
The mole ratio of calcium to carbon is 0.25:0.5, which is not equal to 1:1.
d) 14 g of nitrogen and 24 g of magnesium
Number of moles of nitrogen = 14 / 14 = 1 mol
Number of moles of magnesium = 24 / 24.3 = 0.99 mol
The mole ratio of nitrogen to magnesium is 1:0.99, which is approximately equal to 1:1.
Therefore, the correct answer is option 'D' - 14 g of nitrogen and 24 g of magnesium, which represents a mole ratio of 1:1.
A mole ratio refers to the ratio between the number of moles of any two compounds or elements taking part in a chemical reaction. It states that for any particular reaction, the ratio between moles of reactants and products is always a whole number ratio of small integers.
Finding the Mole Ratio:
To find the mole ratio, we need to first determine the number of moles of each element or compound involved in the reaction.
The formula for calculating the number of moles is:
Number of moles = Given mass / Molar mass
Where,
Given mass is the mass of the element or compound given in the problem
Molar mass is the atomic mass or molecular mass of the element or compound
Solution:
a) 20 g of sodium and 20 g of calcium
Number of moles of sodium = 20 / 23 = 0.87 mol
Number of moles of calcium = 20 / 40 = 0.5 mol
The mole ratio of sodium to calcium is 0.87:0.5, which is not equal to 1:1.
b) 7 g of nitrogen and 12 gm of sodium
Number of moles of nitrogen = 7 / 14 = 0.5 mol
Number of moles of sodium = 12 / 23 = 0.52 mol
The mole ratio of nitrogen to sodium is 0.5:0.52, which is not equal to 1:1.
c) 10 g of calcium and 6 g of carbon
Number of moles of calcium = 10 / 40 = 0.25 mol
Number of moles of carbon = 6 / 12 = 0.5 mol
The mole ratio of calcium to carbon is 0.25:0.5, which is not equal to 1:1.
d) 14 g of nitrogen and 24 g of magnesium
Number of moles of nitrogen = 14 / 14 = 1 mol
Number of moles of magnesium = 24 / 24.3 = 0.99 mol
The mole ratio of nitrogen to magnesium is 1:0.99, which is approximately equal to 1:1.
Therefore, the correct answer is option 'D' - 14 g of nitrogen and 24 g of magnesium, which represents a mole ratio of 1:1.
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Can you explain the answer of this question below:Which of the following pair of elements represents a mole ratio of 1:1?A:20 g of sodium and 20 g of calciumB:7 g of nitrogen and 12 gm of sodiumC:10 g of calcium and 6 g of carbonD:14 g of nitrogen and 24 g of magnesiumThe answer is d.
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Can you explain the answer of this question below:Which of the following pair of elements represents a mole ratio of 1:1?A:20 g of sodium and 20 g of calciumB:7 g of nitrogen and 12 gm of sodiumC:10 g of calcium and 6 g of carbonD:14 g of nitrogen and 24 g of magnesiumThe answer is d. for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Can you explain the answer of this question below:Which of the following pair of elements represents a mole ratio of 1:1?A:20 g of sodium and 20 g of calciumB:7 g of nitrogen and 12 gm of sodiumC:10 g of calcium and 6 g of carbonD:14 g of nitrogen and 24 g of magnesiumThe answer is d. covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can you explain the answer of this question below:Which of the following pair of elements represents a mole ratio of 1:1?A:20 g of sodium and 20 g of calciumB:7 g of nitrogen and 12 gm of sodiumC:10 g of calcium and 6 g of carbonD:14 g of nitrogen and 24 g of magnesiumThe answer is d..
Can you explain the answer of this question below:Which of the following pair of elements represents a mole ratio of 1:1?A:20 g of sodium and 20 g of calciumB:7 g of nitrogen and 12 gm of sodiumC:10 g of calcium and 6 g of carbonD:14 g of nitrogen and 24 g of magnesiumThe answer is d. for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Can you explain the answer of this question below:Which of the following pair of elements represents a mole ratio of 1:1?A:20 g of sodium and 20 g of calciumB:7 g of nitrogen and 12 gm of sodiumC:10 g of calcium and 6 g of carbonD:14 g of nitrogen and 24 g of magnesiumThe answer is d. covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can you explain the answer of this question below:Which of the following pair of elements represents a mole ratio of 1:1?A:20 g of sodium and 20 g of calciumB:7 g of nitrogen and 12 gm of sodiumC:10 g of calcium and 6 g of carbonD:14 g of nitrogen and 24 g of magnesiumThe answer is d..
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Can you explain the answer of this question below:Which of the following pair of elements represents a mole ratio of 1:1?A:20 g of sodium and 20 g of calciumB:7 g of nitrogen and 12 gm of sodiumC:10 g of calcium and 6 g of carbonD:14 g of nitrogen and 24 g of magnesiumThe answer is d., a detailed solution for Can you explain the answer of this question below:Which of the following pair of elements represents a mole ratio of 1:1?A:20 g of sodium and 20 g of calciumB:7 g of nitrogen and 12 gm of sodiumC:10 g of calcium and 6 g of carbonD:14 g of nitrogen and 24 g of magnesiumThe answer is d. has been provided alongside types of Can you explain the answer of this question below:Which of the following pair of elements represents a mole ratio of 1:1?A:20 g of sodium and 20 g of calciumB:7 g of nitrogen and 12 gm of sodiumC:10 g of calcium and 6 g of carbonD:14 g of nitrogen and 24 g of magnesiumThe answer is d. theory, EduRev gives you an
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