The mass of the sun is 2.0 × 10³⁰ kg,and the mass of a hydrogen atom is 1.67 × 10−²⁷ kg.If we assume that the sun is mostly composed of hydrogen,how many atoms are there in the sun? A) 1.2 × 10⁵⁶ atoms B) 3.4 × 10⁵⁶ atoms C) 1.2 × 10⁵⁷ atoms D) 2.4 × 10⁵⁷ atoms

Question

Quizplus · Accepted Answer

The number of hydrogen atoms in the sun can be calculated by dividing the mass of the sun by the mass of one hydrogen atom and then multiplying by Avogadro's number (6.02 × 10^23).

Number of hydrogen atoms in the sun = (2.0 × 10^30 kg) / (1.67 × 10^-27 kg/atom) x (6.02 × 10^23 atoms/mol)
                                  = 1.2 x 10^57 atoms.

Therefore, the best choice is (C), 1.2 × 10^57 atoms.

The Mass of the Sun Is 2