What is the number of moles of He in 104 g of helium gas ?

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Q: 10 (CDS-I/2022)
What is the number of moles of ‘He’ in 104 g of helium gas ?

question_subject: 

Geography

question_exam: 

CDS-I

stats: 

0,91,123,91,91,17,15

keywords: 

{'helium gas': [0, 0, 0, 1], 'moles': [0, 0, 0, 3], 'number': [0, 0, 0, 2]}

The correct answer is option 2: 26.

To find the number of moles of `He` in 104 g of helium gas, we need to use the molar mass of helium.

The molar mass of helium (He) is approximately 4 g/mol.

We can calculate the number of moles using the formula:

moles = mass / molar mass

Plugging in the values, we have:

moles = 104 g / 4 g/mol

moles = 26 mol

Therefore, there are 26 moles of helium gas in 104 g of helium gas.

It`s important to note that option 1 (52) is incorrect because it is twice the correct answer. Option 3 (13) is incorrect because it is half the correct answer. Option 4 (6-5) is also incorrect as it is not a valid numeric value. Thus, the correct answer is option 2: 26.