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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Titanium(IV) oxide is heated in hydrogen gas to give water and a new titanium oxide, TixOy . If 1.598 g of TiO2 produces 1.438 g of TixOy , what is the empirical formula of the new oxide?
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- For the reaction represented by the equation C12+ 2KBr 2KC1 + Br2, how many grams of potassium chloride (KC1) are produced from 3.75 x 1023 molecules of chlorine gas?arrow_forwardCryolite (Na3AlF6) is used in the production of aluminum from its ores. It is made by the reaction 6 NaOH + Al2O3 + 12 HF → 2 Na3AlF6 + 9 H2O Calculate the mass of cryolite that can be prepared by the complete reaction of 287 g Al2O3.arrow_forwardWhen heated, Fe(OH)3 decomposes into Fe2O3 and water, according to the following equation: 2 Fe(OH)3 (S) > Fe2O3 (s) + 3 H2O (g). If 24.24 g of Fe(OH)3 decomposes, and 13.56 g of Fe2O3 are obtained in the reaction, what is the percent yield of the reaction?arrow_forward
- If you have 1 mol Xe and 1 mol F2, how many moles of XeF4 can you create in the following chemical reaction? Xe (g) + 2 F₂ (g) → XeF4 (g) A) 2 mol B) 1 mol C) 0.5 mol D) 0.25 molarrow_forwardFor the reaction represented by the equation C12+ 2KBr 2KC1+Br2, how many grams of potassium chloride (KC1) are produced from 3.75 x 1023 molecules of chlorine gas (C12)?arrow_forwardA student performed a similar experiment to the one you performed: They took a crucible and lid, cleaned them, heated them over a flame, and after cooling found their combined mass to be 22.538 g. The student then added a sample of zinc(II) sulfate hydrate (ZnSO4·“n”H2O) to the crucible so the combined mass of the sample, crucible, and lid was 25.896 g. They heated this sample for 10 minutes with the lid ajar, let it cool, and measured the mass of the crucible, sample, and lid to be 25.054 g. a. Based on this experiment, what is the formula for they hydrated zinc(II) sulfate compound? b. The student later looked on the reagent bottle for zinc(II) sulfate hydrate and found the actual formula was ZnSO4·7H2O. If everything had been done correctly, what value should the student have expected for the final mass of their sample, crucible, and lid after heating?arrow_forward
- If 9.9 × 10²⁵ molecules of CO₂ are produced in a combustion reaction, what is the mass in kg of CO₂ that is produced?arrow_forwardA 1.000 g sample of an unknown compound containing only carbon, hydrogen, and oxygen was analyzed through combustion analysis and yielded 2.224 g of CO2 and 0.3035 g of H2O. What is the compound's empirical formula?arrow_forward
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