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symbo symbo
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7 years ago
Which of the following easily observed molecular species is used as a tracer for the fundamental but difficult to observe H2 molecules in giant molecular clouds?
A)   Hydroxyl (OH)   C)   Carbon dioxide (CO2)
B)   Water vapor (H2O)   D)   Carbon monoxide (CO)
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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papachulopapachulo
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symbo Author
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7 years ago
Thanks
patod1
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Yesterday
this is exactly what I needed
kamikazekota
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2 hours ago
Thanks for your help!!
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