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MY ANSWER IS....SPECTROSCOPE....because stars can seen through spectroscope...:))

sorry kung ganito lang kasimple yung answer ko...im just a grade 6 pupil lang kasi..

nice to meet you all...

-Dulce Dumapias...add me on facebook..ahaha:)) see you there..:))

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Q: What instrument do the astronomers use to determine the chemical composition of the star?
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What instrument do the astronomers use to determine the chemical composition of a star?

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.


How do astronomers determine the chemical compositions of stars?

The answer is long and complicated, and it is too long to place here. You need to read an entire encyclopedia articles on spectroscopy and the chemical composition of intersteller objects. D.A.W.


How does a spectrograph provide information about stars chemical composition?

A spectrograph is an instrument for chemical analysis.


How would you determine the chemical composition of magnetite?

Fe2O3


How do astronomers determine the composition of distant celestial objects?

Spectroscopy is the systematic study of spectra and spectral lines. Spectral lines are used to provide evidence about the chemical composition of distant objects. So the answer to your question is through spectroscopy.. not spectrometry like the previous editor posted.


How did astronomers in the 19th century gather information about the chemical composition of stellar objects?

There is one way for gathering information about chemical composition of stellar objects - spectral analysis! Astronomical spectroscopy began with Isaac Newton's initial observations of the light of the Sun, dispersed by a prism. He saw a rainbow of colour, and may have seen absorption lines. The absorption lines in stellar spectra can be used to determine the chemical composition of the star.


What are the factors that determine the thermal energy of a substance?

Its mass and and its chemical composition.


Spectrographs help astronomers determine a star's what?

The star's chemical composition; the star's rotation; pulsations of the star; planets or other invisible objects moving around the star; how quickly the star is moving towards us or away from us.


To determine the formula of a new substance one of the first steps is to find?

The chemical formula is determined by chemical analysis of the components.


What are two factors that determine the thermal energy of a substance?

Its mass and and its chemical composition.


What was the robotic vehicle opportunity to do?

determine the chemical composition of rocks and soil on Mars


How will you prove the ic water and stream are the forms of single compound?

Chemical analysis determine that the chemical composition is identical.