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X and H form two compounds that contain 17.6 5% and 12.50% hydrogen by mass respectively if the first compound is X H3 then the second one could be?
Most Upvoted Answer
X and H form two compounds that contain 17.6 5% and 12.50% hydrogen by...
Explanation:
Step 1: Find the molar mass of XH3.
Molar mass of XH3 = (1 x Atomic mass of X) + (3 x Atomic mass of H)
We do not know the atomic mass of X or H, so we will use their percentages by mass to find their atomic masses.
Let's assume that we have 100 g of XH3.
The mass of hydrogen in XH3 = 17.65 g
The mass of X in XH3 = 100 - 17.65 = 82.35 g
The percentage of hydrogen in XH3 by mass = (mass of hydrogen/mass of XH3) x 100
17.65 = (mass of hydrogen/100) x 100
mass of hydrogen = 17.65 g
The percentage of X in XH3 by mass = (mass of X/mass of XH3) x 100
82.35 = (mass of X/100) x 100
mass of X = 82.35 g
The atomic mass of hydrogen = mass of hydrogen/number of moles of hydrogen
= 17.65/3 = 5.883 g/mol
The atomic mass of X = mass of X/number of moles of X
We do not know the number of moles of X, so we cannot calculate its atomic mass.
Step 2: Find the formula of the second compound.
Let's assume that we have 100 g of the second compound.
The mass of hydrogen in the second compound = 12.50 g
The mass of the other element in the second compound = 100 - 12.50 = 87.50 g
The percentage of hydrogen in the second compound by mass = (mass of hydrogen/mass of second compound) x 100
12.50 = (mass of hydrogen/100) x 100
mass of hydrogen = 12.50 g
The percentage of the other element in the second compound by mass = (mass of the other element/mass of second compound) x 100
87.50 = (mass of the other element/100) x 100
mass of the other element = 87.50 g
The atomic mass of hydrogen = 5.883 g/mol (from step 1)
The number of moles of hydrogen in the second compound = mass of hydrogen/atomic mass of hydrogen
= 12.50/5.883 = 2.126 mol
Assume that the formula of the second compound is YHx.
The number of moles of Y in the second compound = mass of Y/atomic mass of Y
We do not know the atomic mass of Y, so we cannot calculate its number of moles.
The ratio of the number of moles of hydrogen to Y in the second compound = 2.126/x
We need to find an integer value of x that makes this ratio a whole number.
Step 3: Find the possible formula of the second compound.
The ratio of the number of moles of hydrogen to Y in the second compound = 2.126/x
For x = 1, the ratio = 2.126/1 = 2.126 (not a whole number)
For x = 2, the ratio
Step 1: Find the molar mass of XH3.
Molar mass of XH3 = (1 x Atomic mass of X) + (3 x Atomic mass of H)
We do not know the atomic mass of X or H, so we will use their percentages by mass to find their atomic masses.
Let's assume that we have 100 g of XH3.
The mass of hydrogen in XH3 = 17.65 g
The mass of X in XH3 = 100 - 17.65 = 82.35 g
The percentage of hydrogen in XH3 by mass = (mass of hydrogen/mass of XH3) x 100
17.65 = (mass of hydrogen/100) x 100
mass of hydrogen = 17.65 g
The percentage of X in XH3 by mass = (mass of X/mass of XH3) x 100
82.35 = (mass of X/100) x 100
mass of X = 82.35 g
The atomic mass of hydrogen = mass of hydrogen/number of moles of hydrogen
= 17.65/3 = 5.883 g/mol
The atomic mass of X = mass of X/number of moles of X
We do not know the number of moles of X, so we cannot calculate its atomic mass.
Step 2: Find the formula of the second compound.
Let's assume that we have 100 g of the second compound.
The mass of hydrogen in the second compound = 12.50 g
The mass of the other element in the second compound = 100 - 12.50 = 87.50 g
The percentage of hydrogen in the second compound by mass = (mass of hydrogen/mass of second compound) x 100
12.50 = (mass of hydrogen/100) x 100
mass of hydrogen = 12.50 g
The percentage of the other element in the second compound by mass = (mass of the other element/mass of second compound) x 100
87.50 = (mass of the other element/100) x 100
mass of the other element = 87.50 g
The atomic mass of hydrogen = 5.883 g/mol (from step 1)
The number of moles of hydrogen in the second compound = mass of hydrogen/atomic mass of hydrogen
= 12.50/5.883 = 2.126 mol
Assume that the formula of the second compound is YHx.
The number of moles of Y in the second compound = mass of Y/atomic mass of Y
We do not know the atomic mass of Y, so we cannot calculate its number of moles.
The ratio of the number of moles of hydrogen to Y in the second compound = 2.126/x
We need to find an integer value of x that makes this ratio a whole number.
Step 3: Find the possible formula of the second compound.
The ratio of the number of moles of hydrogen to Y in the second compound = 2.126/x
For x = 1, the ratio = 2.126/1 = 2.126 (not a whole number)
For x = 2, the ratio
Community Answer
X and H form two compounds that contain 17.6 5% and 12.50% hydrogen by...
XH2
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X and H form two compounds that contain 17.6 5% and 12.50% hydrogen by mass respectively if the first compound is X H3 then the second one could be?
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X and H form two compounds that contain 17.6 5% and 12.50% hydrogen by mass respectively if the first compound is X H3 then the second one could be? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about X and H form two compounds that contain 17.6 5% and 12.50% hydrogen by mass respectively if the first compound is X H3 then the second one could be? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for X and H form two compounds that contain 17.6 5% and 12.50% hydrogen by mass respectively if the first compound is X H3 then the second one could be?.
X and H form two compounds that contain 17.6 5% and 12.50% hydrogen by mass respectively if the first compound is X H3 then the second one could be? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about X and H form two compounds that contain 17.6 5% and 12.50% hydrogen by mass respectively if the first compound is X H3 then the second one could be? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for X and H form two compounds that contain 17.6 5% and 12.50% hydrogen by mass respectively if the first compound is X H3 then the second one could be?.
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