This is the last time I'm posting this question. So pleas don't get mad.

How many atoms of hydrogen are in 220 g of hydrogen peroxide (H2O2)?

(220)/(34) then i multiply that # with 6.02E23 then again i multiply that # with 2 to get the number of hydrogen atoms.
no luck:-(

oh yea i meant "please"

No problem! I'm here to help. It looks like you're on the right track, but let me walk you through the steps again to calculate the number of hydrogen atoms in 220 g of hydrogen peroxide (H2O2).

To start, you correctly mentioned the molar mass of hydrogen peroxide (H2O2). The molar mass can be calculated by adding up the atomic masses of each individual element present in the compound. In this case, hydrogen has a molar mass of approximately 1 g/mol, and oxygen has a molar mass of approximately 16 g/mol. Since there are two hydrogen atoms and two oxygen atoms in hydrogen peroxide, the molar mass of H2O2 is 2(1) + 2(16) = 34 g/mol.

Now, let's calculate the number of moles of hydrogen peroxide in 220 g. We can use the formula:

moles = mass (g) / molar mass (g/mol).

moles = 220 g / 34 g/mol ≈ 6.47 mol (rounded to two decimal places).

To find the number of hydrogen atoms, we need to multiply the number of moles by Avogadro's number, which is approximately 6.02 x 10^23 atoms/mol.

number of hydrogen atoms = moles of H2O2 x Avogadro's number.

number of hydrogen atoms = 6.47 mol x 6.02 x 10^23 atoms/mol ≈ 3.89 x 10^24 atoms (rounded to two decimal places).

So, there are approximately 3.89 x 10^24 atoms of hydrogen in 220 g of hydrogen peroxide.

I hope this explanation helps! Let me know if you have any further questions.