Card 1 of 30
What percentage of dry air is nitrogen?
A
About 0.9%.
B
About 78%.
C
About 0.04%.
D
About 21%.
Card 1 of 30
Gases in the atmosphere Flashcards
30 flashcards on Edexcel IGCSE Chemistry Gases in the atmosphere: the key terms, formulae and methods you need to recall for Paper 1 and Paper 2.