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Two elements X (atomic mass = 75) and Y (atomic mass = 16) combine to give a compound having 75.8% of X. The formula of the compound is:
- a)X2Y3
- b)X2Y
- c)X2Y2
- d)XY
Correct answer is option 'A'. Can you explain this answer?
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Two elements X (atomic mass = 75) and Y (atomic mass = 16) combine to ...
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Two elements X (atomic mass = 75) and Y (atomic mass = 16) combine to ...
Solution
Given: Atomic mass of X = 75
Atomic mass of Y = 16
Percentage of X in the compound = 75.8%
Let us assume that the compound has a total mass of 100 g. Then,
Mass of X in the compound = 75.8 g
Mass of Y in the compound = (100 - 75.8) g = 24.2 g
Now, we need to find the simplest ratio of X and Y in the compound to determine the formula.
Dividing the mass of X and Y by their respective atomic masses, we get:
Number of moles of X = 75.8/75 = 1.01
Number of moles of Y = 24.2/16 = 1.51
Dividing both by the smaller value, we get:
Number of moles of X = 1.01/1.01 = 1
Number of moles of Y = 1.51/1.01 = 1.5
The simplest ratio of X and Y in the compound is 1:1.5 or 2:3.
Therefore, the formula of the compound is X2Y3. Hence, option (a) is the correct answer.
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Solution
Given:
Atomic mass of X = 75
Atomic mass of Y = 16
Percentage of X in the compound = 75.8%
Let us assume that the compound has a total mass of 100 g. Then,
Mass of X in the compound = 75.8 g
Mass of Y in the compound = (100 - 75.8) g = 24.2 g
Now, we need to find the simplest ratio of X and Y in the compound to determine the formula.
Dividing the mass of X and Y by their respective atomic masses, we get:
Number of moles of X = 75.8/75 = 1.01
Number of moles of Y = 24.2/16 = 1.51
Dividing both by the smaller value, we get:
Number of moles of X = 1.01/1.01 = 1
Number of moles of Y = 1.51/1.01 = 1.5
The simplest ratio of X and Y in the compound is 1:1.5 or 2:3.
Therefore, the formula of the compound is X2Y3. Hence, option (a) is the correct answer.
Given: Atomic mass of X = 75
Atomic mass of Y = 16
Percentage of X in the compound = 75.8%
Let us assume that the compound has a total mass of 100 g. Then,
Mass of X in the compound = 75.8 g
Mass of Y in the compound = (100 - 75.8) g = 24.2 g
Now, we need to find the simplest ratio of X and Y in the compound to determine the formula.
Dividing the mass of X and Y by their respective atomic masses, we get:
Number of moles of X = 75.8/75 = 1.01
Number of moles of Y = 24.2/16 = 1.51
Dividing both by the smaller value, we get:
Number of moles of X = 1.01/1.01 = 1
Number of moles of Y = 1.51/1.01 = 1.5
The simplest ratio of X and Y in the compound is 1:1.5 or 2:3.
Therefore, the formula of the compound is X2Y3. Hence, option (a) is the correct answer.
HTML Code:
Solution
Given:
Atomic mass of X = 75
Atomic mass of Y = 16
Percentage of X in the compound = 75.8%
Let us assume that the compound has a total mass of 100 g. Then,
Mass of X in the compound = 75.8 g
Mass of Y in the compound = (100 - 75.8) g = 24.2 g
Now, we need to find the simplest ratio of X and Y in the compound to determine the formula.
Dividing the mass of X and Y by their respective atomic masses, we get:
Number of moles of X = 75.8/75 = 1.01
Number of moles of Y = 24.2/16 = 1.51
Dividing both by the smaller value, we get:
Number of moles of X = 1.01/1.01 = 1
Number of moles of Y = 1.51/1.01 = 1.5
The simplest ratio of X and Y in the compound is 1:1.5 or 2:3.
Therefore, the formula of the compound is X2Y3. Hence, option (a) is the correct answer.
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Two elements X (atomic mass = 75) and Y (atomic mass = 16) combine to ...
Its answer is option (a)
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Two elements X (atomic mass = 75) and Y (atomic mass = 16) combine to give a compound having 75.8% of X. The formula of the compound is:a)X2Y3b)X2Yc)X2Y2d)XYCorrect answer is option 'A'. Can you explain this answer?
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