1. At what concentration (in ppm), is nitrogen present in the atmosphere? a) 780,840 b) 390,420 c) 78,084 d) 900,000 AnswerAnswer: a [Reason:] Nitrogen constitutes 78% of the atmosphere. So 78% of one million = 780,840 ppm – is the concentration of nitrogen gas in the atmosphere. 2. In the lower layers of atmosphere, what…
This content is for paid premium members only.
You can view complete answer after activation your membership.
Need only one answers. Simply buy single day pass and email. We will send answers for this question.
Login Buy membership