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One mole of oxygen atom weighs 16 grams, what will be the mass (in grams) of 0.4 moles of oxygen atoms?
- a)40 grams
- b)32 grams
- c)16 grams
- d)6.4 grams
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
One mole of oxygen atom weighs 16 grams, what will be the mass (in gra...
**Given:**
- One mole of oxygen atom weighs 16 grams.
**To find:**
- The mass (in grams) of 0.4 moles of oxygen atoms.
**Solution:**
To find the mass of 0.4 moles of oxygen atoms, we can use the concept of molar mass.
**Molar Mass:**
The molar mass of an element is the mass of one mole of atoms of that element. It is expressed in grams per mole (g/mol).
For oxygen, the molar mass is 16 g/mol. This means that one mole of oxygen atoms weighs 16 grams.
Now, we need to find the mass of 0.4 moles of oxygen atoms.
**Step 1:**
Calculate the mass of one mole of oxygen atoms.
Given:
- One mole of oxygen atom weighs 16 grams.
So, the mass of one mole of oxygen atoms = 16 grams.
**Step 2:**
Calculate the mass of 0.4 moles of oxygen atoms.
To find the mass of 0.4 moles of oxygen atoms, we can use the formula:
Mass = Number of moles × Molar mass
Given:
- Number of moles = 0.4 moles
- Molar mass of oxygen = 16 g/mol
Substituting the values in the formula:
Mass = 0.4 moles × 16 g/mol
Mass = 6.4 grams
Therefore, the mass of 0.4 moles of oxygen atoms is 6.4 grams.
Hence, the correct answer is option (d) 6.4 grams.
- One mole of oxygen atom weighs 16 grams.
**To find:**
- The mass (in grams) of 0.4 moles of oxygen atoms.
**Solution:**
To find the mass of 0.4 moles of oxygen atoms, we can use the concept of molar mass.
**Molar Mass:**
The molar mass of an element is the mass of one mole of atoms of that element. It is expressed in grams per mole (g/mol).
For oxygen, the molar mass is 16 g/mol. This means that one mole of oxygen atoms weighs 16 grams.
Now, we need to find the mass of 0.4 moles of oxygen atoms.
**Step 1:**
Calculate the mass of one mole of oxygen atoms.
Given:
- One mole of oxygen atom weighs 16 grams.
So, the mass of one mole of oxygen atoms = 16 grams.
**Step 2:**
Calculate the mass of 0.4 moles of oxygen atoms.
To find the mass of 0.4 moles of oxygen atoms, we can use the formula:
Mass = Number of moles × Molar mass
Given:
- Number of moles = 0.4 moles
- Molar mass of oxygen = 16 g/mol
Substituting the values in the formula:
Mass = 0.4 moles × 16 g/mol
Mass = 6.4 grams
Therefore, the mass of 0.4 moles of oxygen atoms is 6.4 grams.
Hence, the correct answer is option (d) 6.4 grams.
Community Answer
One mole of oxygen atom weighs 16 grams, what will be the mass (in gra...
No.of moles=0.4 Molar mass=16 so,Mass of 0.4 mole=0.4×16=6.4 units.....
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One mole of oxygen atom weighs 16 grams, what will be the mass (in grams) of 0.4 moles of oxygen atoms?a)40 gramsb)32 gramsc)16 gramsd)6.4 gramsCorrect answer is option 'D'. Can you explain this answer?
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One mole of oxygen atom weighs 16 grams, what will be the mass (in grams) of 0.4 moles of oxygen atoms?a)40 gramsb)32 gramsc)16 gramsd)6.4 gramsCorrect answer is option 'D'. Can you explain this answer? 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 One mole of oxygen atom weighs 16 grams, what will be the mass (in grams) of 0.4 moles of oxygen atoms?a)40 gramsb)32 gramsc)16 gramsd)6.4 gramsCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for One mole of oxygen atom weighs 16 grams, what will be the mass (in grams) of 0.4 moles of oxygen atoms?a)40 gramsb)32 gramsc)16 gramsd)6.4 gramsCorrect answer is option 'D'. Can you explain this answer?.
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