A scientist is preparing Aluminum Oxide (Al2O3) by reacting solid Aluminum and Oxygen gas together as shown by this chemical equation:4Al + 3O2 → 2Al2O3 The scientist measures the mass of Aluminum before the reaction and finds 107.92 grams. The scientist measures the mass of Aluminum Oxide after the reaction and finds 299.91 grams. The scientist concludes that 95.99 grams of Oxygen gas must have reacted with the Aluminum. Explain the law that the scientist used to predict the amount of Oxygen gas in the reaction and how that law was used to find the amount of Oxygen gas.
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Chemistry, 21.06.2019 15:30, officialrogerfp3gf2s
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Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.
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Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution. calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.
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Chemistry, 22.06.2019 14:00, leahstubbs
8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.
Answers: 3
A scientist is preparing Aluminum Oxide (Al2O3) by reacting solid Aluminum and Oxygen gas together a...
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