Argon (Ar\text{Ar}Ar) and carbon dioxide (CO2\text{CO}_2CO2) are two of the minor gases present in today's dry atmosphere. Using their standard approximate percentages by volume in today's dry atmosphere, what is the ratio of the volume of argon to the volume of carbon dioxide?
2.252.252.25
22.522.522.5
225225225
525525525
Practise Edexcel GCSE Chemistry Earth and atmospheric science with exam-style questions for Foundation and Higher tier. 62 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
