Helium is used to inflate meteorological research balloons that carry measuring instruments into the upper atmosphere.
State one property of helium, apart from it being chemically inert, that makes it suitable for this application.
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Markscheme
7.3 Group 0 Questions
44 exam-style questions on Edexcel GCSE Chemistry 7.3 Group 0, covering 7.3.1 The noble gases. Each one has a worked solution and a mark scheme showing where the marks go.