To determine the number of moles of hydrogen in the sample, we need to know the ratio of hydrogen atoms to carbon atoms in aluminum acetate.
The molecular formula for aluminum acetate is Al(C2H3O2)3. From the formula, we can see that there are 3 hydrogen atoms for every 1 molecule of aluminum acetate.
Since we are given the number of carbon atoms in the sample (1.2 x 10^24 atoms), we can calculate the number of hydrogen atoms in the sample as follows:
Number of hydrogen atoms = Number of carbon atoms × (3 H atoms / 1 molecule of aluminum acetate)
= 1.2 x 10^24 atoms × (3 H atoms / 1 molecule of aluminum acetate)
Next, we need to convert the number of hydrogen atoms to moles. To do this, we need to know Avogadro's number, which is approximately 6.022 x 10^23 mol^-1.
Number of moles of hydrogen = Number of hydrogen atoms / Avogadro's number
= (1.2 x 10^24 atoms × 3) / 6.022 x 10^23 atoms/mol
Simplifying the expression:
Number of moles of hydrogen = (3.6 x 10^24 atoms) / (6.022 x 10^23 atoms/mol)
= 5.98 moles
Therefore, there are approximately 5.98 moles of hydrogen in the sample.
There are 1.2 x 10^24 atoms of carbon in a sample of aluminum acetate, Al(C2H3O2)3. How many moles of hydrogen are in the sample?
[?] moles H
1 answer