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OpenStudy (symone19):

Which of the following should be classified as a mixture? water air iron helium

OpenStudy (gracygirl):

Air.

OpenStudy (symone19):

thank you....do you think you can help me with another one

OpenStudy (gracygirl):

I can try

Awolflover1 (awolflover1):

Air is made up by oxygen it doesn't have a formula unlike others.

Awolflover1 (awolflover1):

Btw No Direct Answers and This should be in Science Subject :)

OpenStudy (symone19):

An unknown substance is tested and found to have the following physical properties: brittle fair conductor of electricity dull (not shiny) The substance is most likely a _____. metal metalloid nonmetal cannot be determined without more data

OpenStudy (advert):

yep

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