An analytical chemist measures the amount of Elements E, and E₂ in four samples of an unknown Substance X: mass mass sample of E₁ of E₂ 15.8 g 9.1 g 7.6 g 4.4 g 17.2 g 9.8 g 12.1 g 6.9 g Using this information, answer the questions in the table below. 1 2 3 4 Is X a pure substance or a mixture? If you don't have enough information to decide, choose can't decide. It's known that X contains no elements other than E, and E₂. If you said X is a pure substance, calculate the mass of Element E, the analytical chemist would find in a new 10.0 g sample of X. Round your answer to 2 significant digits. Explanation Check O pure substance O mixture O (can't decide) 2 0 x10 X Ⓒ2023 McGraw Hill LLC. All Rights Reserved. Te

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".