A helium ballon contains 0.32g of helium. Given the molecular weight of helium is 4. How many moles of helium does it contain.

mols = grams/molecular weight

To find the number of moles of helium in the balloon, you can use the formula:

moles = mass / molar mass

Given that the mass of helium in the balloon is 0.32g and the molecular weight of helium is 4 g/mol, we can substitute these values into the formula:

moles = 0.32g / 4 g/mol

Dividing 0.32g by 4 g/mol, we get:

moles = 0.08 mol

Therefore, the helium balloon contains 0.08 moles of helium.

To calculate the number of moles of helium in the balloon, you need to use the equation:

moles = mass / molar mass

In this case, the mass of helium in the balloon is given as 0.32g, and the molar mass of helium is 4 g/mol.

Now we can substitute these values into the equation:

moles = 0.32g / 4 g/mol

Simplifying the equation:

moles = 0.08 mol

Therefore, the helium balloon contains 0.08 moles of helium.

0.008