To determine the mass of 5.2x10^25 atoms of hydrogen (H) in a candle with the molecular formula C25H52, we need to calculate the molar mass of hydrogen and then multiply it by the number of atoms.
The molar mass of hydrogen (H) is approximately 1.008 grams/mol.
To calculate the mass of 5.2x10^25 hydrogen atoms, we can use the following steps:
Determine the number of moles of hydrogen atoms: Number of moles = Number of atoms / Avogadro's number Number of moles = (5.2x10^25 atoms) / (6.022x10^23 atoms/mol)
Calculate the mass of hydrogen atoms: Mass = Number of moles * Molar mass Mass = (Number of moles) * (Molar mass)
Substituting the values:
Number of moles = (5.2x10^25 atoms) / (6.022x10^23 atoms/mol) Number of moles ≈ 8.633
Mass = (8.633 mol) * (1.008 g/mol) Mass ≈ 8.702 g
Therefore, the mass of 5.2x10^25 atoms of hydrogen in a candle (C25H52) is approximately 8.702 grams.