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Home Q & A Board Science-Related Homework Help Physics
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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
Authors:
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papachulopapachulo
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#1
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7 years ago
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symbo Author
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7 years ago
Good timing, thanks!
momochiime
wrote...

Yesterday
Smart ... Thanks!
aricketts6@
wrote...

2 hours ago
You make an excellent tutor!
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