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-How many aluminum atoms are there in 21.0 g of Al2S3? -When balanced with the smallest...

-How many aluminum atoms are there in 21.0 g of Al2S3?

-When balanced with the smallest set of whole numbers, the coefficient of O2 in the following equation is:

                                            __ C3H8 + __ O2 -------------> __ CO2 + __ H2O

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Answer #1

1) NO of sulfur atoms-21.0g x 1 mol Alas,一2molAI x 6023x1023 Al atoms 177g 1mol Al253 1 mol Al -1.43x1023 Al atoms 2) skeleto

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