Depending on how accurate you need to get, weighing and comparison of electrical conductivity with the International Annealed copper Standard will give an indication.
They use a spectrograph to pass light through a prism to break it the light waves into its constituent colors. Then by looking at what colors are missing they can determine both the temperature and composition of the star.
A spectrograph is an instrument for chemical analysis.
Fe2O3
Its mass and and its chemical composition.
The chemical formula is determined by chemical analysis of the components.
Its mass and and its chemical composition.
determine the chemical composition of rocks and soil on Mars
Chemical analysis determine that the chemical composition is identical.
An analytical instrument is the instrument used to determine the chemical composition of materials, qualitatively or quantitatively; ex.: internally coupled plasma mass spectrometer, polarograph, atomic absorption spectrometer, X-ray spectrometer, coulometer, Karl Fischer titrator, etc.
determine the chemical composition of rocks and soil on Mars
determine the chemical composition of rocks and soil on Mars
determine the chemical composition of rocks and soil on mars.