Answer:
1.55 × 10²⁵ atoms of H
Explanation:
3.21mol C₃H₈ × 8mol H × (6.022×10²³)
A lunar eclipse can only happen during a full moon.
Hope I helped :)
D
90
gshhhshussussussjsuushhshjssuss
One advantage is radio telescopes have much longer wave length