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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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Question
What is the molecular formula of a compound with the empirical formula CH2O and a molar mass of 60.0 g?
Group of answer choices
C2H4O2
CH2O
C2H2O2
C2H4O4
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- R F 888 0₂ FA When 6.911 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 21.68 grams of CO₂ and 8.878 grams of H₂O were produced. In a separate experiment, the molecular weight of the compound was found to be 42.08 amu. Determine the empirical formula and the molecular formula of the hydrocarbon. Enter the elements in the order presented in the question. empirical formula = 96 5 molecular formula = Sample T [Review Topics] [References] Use the References to access important values if needed for this question. G F5 B ♫ 6 stv MacBook Air Y FG H SLA ■ & 7 N Furnace U J 2 8 H₂O absorber M 1 K ( 9 DD FO * O V ) O CO₂ absorber so F10 P : ; L Previous F11 1 + [ = Next Save and Exit F12 1 1 1 delete 1arrow_forwardWhat is the molecular formula of a compound given the molar mass of the compound is 62.2 g/mol and the empirical formula is C2H7? Question 11 options: C6H21 C4H14 C2H7 none of thesearrow_forwardCalculate the mass percent composition of carbon in C2H4O2 and CH4 to determine which compound has the most carbon in it by mass a) C2H4O2 b)CH4arrow_forward
- 4: What is the empirical formula of a compound which contains only oxygen and lead and is 90.6% lead? E: PbO D: Pb₂0 C: Pb304 Pb0₂ B: Pb203 90.6gP 9.480 90.68 Pb AMP 2070P6 1.499 Tat 0.4377 ml Pb 522.5875m1 9.9377 64372 95875 e. 4377arrow_forward1. An unknown compound containing tellurium and bromine is analyzed and it is determined that 28.53% of the compound by mass is composed of tellurium. The chemical formula of the compound is TeBr₄. What is the IUPAC name of the unknown compound? 2. How many atoms of zirconium are in 0.3521 mol of ZrSiO₄? 3. Determine the number of atoms of H in 37.7 grams of C₆H₁₂O₆. 4. Determine the number of atoms of O in 7.23 moles of Fe(NO₃)₃. 5. How many moles of calcium atoms do you have if you have 5.39 × 10²¹ atoms of calcium. (The mass of one mole of calcium is 40.08 g.) 6. Calculate the mass, in grams, of 502 atoms of iron, Fe (1 mol of Fe has a mass of 55.85 g). 7. Determine the number of atoms in 45.0 grams of nickel, Ni. (The mass of one mole of nickel is 58.69 g.) 8. Determine the number of atoms in 15.0 grams of bromine, Br. (The mass of one mole of bromine is 79.90 g.)arrow_forwardA compound is found to have an empirical formula of C2H7O. Which of the following cannot be the molar mass of the compound? 94.1 g/mol 70.6 g/mol 141.2 g/mol 188.3 g/molarrow_forward
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