Question

Please help 100 point s

The approximate composition of the atmosphere is shown in the pie-chart. Which statement BEST describes the chart? A) The chart shows the percentages of elements in a mixture. B) The chart shows the percentages of elements in a compound. C) The chart shows the percentages of pure substances in a mixture. D) The chart shows the percentages of compounds in a pure substance.

Answer 1

where is the chart?????

Answer 2

air is NOT a compound - it is a mixture of different gases like O2, N2 n CO2. CO2 is a pure substance but NOT an element. so the CORRECT ans is

C) The chart shows the percentages of pure substances in a mixture.