The number of atoms is 52,63.10e23.
NH3 is balanced at 1:3, so in 3 moles NH3 there are 3*3 = 9 moles H atoms
One molecule has four H atoms.So two moles have 8 moles
divide the mass of the hydrogen by the molar mass.
2 moles C8H18 (18 moles H/1 mole C8H18)(6.022 X 10^23/1 mole H) = 2.2 X 10^25 atoms of hydrogen
7.30 C2H6O (6 moles H/1 mole C2H6O)(6.022 X 1023/1 mole H) = 2.64 X 1025 atoms of hydrogen =====================
4,2.10e25 H atoms
1,93
NH3 is balanced at 1:3, so in 3 moles NH3 there are 3*3 = 9 moles H atoms
.1146g of mass of Unknown and 12.00ml of NaOH. Find the moles of acidic H atoms
One molecule has four H atoms.So two moles have 8 moles
divide the mass of the hydrogen by the molar mass.
8.30 moles (NH4)2S (8 moles H/1 mole (NH4)2S)(6.022 X 1023/1 mole H) = 3.99 X 1025 atoms of hydrogen ========================
2 moles C8H18 (18 moles H/1 mole C8H18)(6.022 X 10^23/1 mole H) = 2.2 X 10^25 atoms of hydrogen
7.30 C2H6O (6 moles H/1 mole C2H6O)(6.022 X 1023/1 mole H) = 2.64 X 1025 atoms of hydrogen =====================
For this problem you don't need the atomic mass of the element. If you want to convert moles to atoms, you need to take the number of moles and multiply it by Avogadro's constant, 6.02 × 1023. Divide by one mole for units to cancel.2.50 moles H × (6.02 × 1023 atoms) = 1.51 ×1024 atoms H
Just moles against the ratio of hydrogen atoms in compound then against Avogadro's number. Like this 0.09 moles H2SO4 (2 moles H/1 mole H2SO4)(6.022 X 10^23/1 mole H) = 1.1 X 10^23 hydrogen atoms
0.180 moles C(OH)4 (4 moles H/1 mole C(OH)4)(6.022 X 10^23/1 mole H) = 4.34 X 10^23 atoms of hydrogen