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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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Fe(s) + O2(g) Fe2O3(s)
If 1.05 g of iron is heated and placed in a bottle containing 0.0219 mol of oxygen gas, what mass of iron(III) oxide is produced
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- a sample of solid silver oxide with a mass of 11.4 grams was reduced to elemental silver by heating under a flow of methane gas CH4- the reaction produced 10.6 grams of silver. what is the empirical formula of silver oxide?arrow_forwardA student reacts 13 moles of iron with 21 moles of oxygen according to the following equation: 4Fe(s)+3O 2 (g) 2Fe 2 O 3 (s) How many moles of iron(III) oxide will the reaction produce?arrow_forwardWhen a 10.0 g sample of an unknown organic acid is subjected to combustion analysis 21.2 grams of CO2 and 3.25 g of H2O are produced. The molar mass of the acid is 165. What are the empirical formula and the molecular formula of the acid?arrow_forward
- What mass of iron (III) oxide is produced when 3.88 X 1025 grams of oxygen reacts with excess iron?arrow_forwardA chemist invents a new combustion analysis instrument that uses less O2(g) which saves money on each analysis. The improvement is that instead of CO2(g) being formed and trapped, CO(g) is formed and trapped. H2O (g) is also formed and trapped when substances that contain hydrogen are analyzed.(a) The chemist places 2.184 g of an unknown compound of carbon and hydrogen in the new analyzer. 4.627 g of CO (g) and 1.795 g of H2O (g) are produced. Find the empirical formula for the compound.(Molar masses (g/mol): CO = 28.0104, H2O = 18.015) (b) Despite the best efforts of the chemist, the molar mass of the compound cannot be determined (using this method). Clearly explain why this prevents the determination of the molecular formulaarrow_forwardWhen a 5.712 g sample of an organic compound containing C, H, and O is burned completely in oxygen, 8.1 g of CO2 and 4.956 g of H2O are produced. What is the empirical formula of the compound?arrow_forward
- For the chemical reaction 2KI+Pb(NO3)2⟶PbI2+2KNO3 what mass of lead(II) iodide is produced from 2.61 mol of potassium iodide?arrow_forwardFor the chemical reaction, Na2CO3+Ca(NO3)2⟶CaCO3+2NaNO3 what mass of calcium nitrate in grams is needed to produce 1.35 mol1.35 mol of sodium nitrate?arrow_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?arrow_forward
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