Initial # of Undecayed atoms (tails up) Trial radioactive Percent of atoms Decayed atoms (heads up) atoms decayed show your work! (# of flips) (previous tails up) Trial 0 100 100 (0/100) x 100% D 0% 57 27 43 Trial 1 100 57 37 14 13 6 Trial 2 27 13 Trial 3 Trial 4 5. 그 Trial 5 Trial 6
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- 17:00 O ll 6 24 The compound benzene contains 92.26% C, the remain is hydrogen and has molar mass of 78 g/mol, what is Molecular formula of benzene. (AL, wt. C-12, H-l)HSC 258 Major Projec X Mind Tap - Cengage Lea X d%3D55750828934189288909969212&elSBN=9781305657571&snapshotld%3D219989 The illustration to the left represents a mixture of iodine ( purple ) and fluorine ( green ) molecules. If the molecules in the above illustration react to form IF3 according to the equation I +3 F2 2 IF3 , the limiting reagent is the number of IF, molecules formed is and the number of atoms/molecules in excess is Submit AnswerQuestic 10 1 pt 9 C = O 282 K O 9 K О 273 K O-284 K Previous Next Quiz saved at 12:50pm Submit
- b Chrome ← → C lockM Apple Google Disney ESPN Yahoo! Biomedical Careers Program ☆ For the reaction Fe(s) +2HCl(aq)→→→→→FeCl₂(s) + H₂(g) AH° = -7.4 kJ and AS° = 107.9 J/K B Submit Answer Apple ☆ prod03-cnow-owl.cengagenow.com iCloud Yahoo Images Bing Google Wikipedia Facebook Twitter LinkedIn G b COWLv2... b D2L D2L D2L [Review Topics] [References] Use the References to access important values if needed for this question. D2L The maximum amount of work that could be done when 2.08 moles of Fe(s) react at 286 K, 1 atm is Assume that AH° and AS° are independent of temperature. Retry Entire Group 4 more group attempts remaining The Weather Channel C D2L Yelp TripAdvisor M kJ. +1PrqdNDx-hBYyzKo-xfiM9-Jlq7EAaWe3GBt t3U3jDo/edit ulator O A Land of Permane... it was seconds ago - UA E- EE 2 Al + 3 H,SO, 6. How many grams of hydrogen gas are produced with 0.S8 moles of aluminum sulfate? 3 H, + Al,(SO); 0.88 moles Al (SO), 3 moles H. 6 g H. 0.88 moles Al (SO), 1 mole H.A www-awn.aleks.com/alekscgi/x/lsl.exe/1o_u-IgNslkr7j8P3jH-lijkPWvZoZLqKt1FLlq7wcPWKzBYGfE9IMFjiQ0kz9QM82nFtjswel O STOICHIOMETRY Using the Avogadro Number -22 A copper atom has a mass of 1.06 × 10 g and a penny has a mass of 2.5 g. Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of copper atoms? g Round your answer to 3 significant digits. How many moles of copper atoms have a mass equal to the mass of a penny? Round your answer to 2 significant digits. IIO ll. T:00 豊 266 js 263 INONE H.W. 1. Calculate the number of grams in one mole of Caso,7H2O? (Atomic weight Ca-40 ,S=32 O-16 H-1). 2. Calculate the number of moles in so0 mg Na SO,?. (MW of Na,SO-293.8 mg/mmol). Dr. Marwa Nizar AL-Hadbaa University College ENG BOT 2:54 PM isc) CO₂Et + H cat. N I N: HOLOOKED CO₂EtPT McGraw Hill Campus Cn [11 O ATOMS, IONS AND MOLECULES Finding atomic mass from isotope mass and natural abundance isotope 74°F 100. Calculate the Molar Mass of Acet X+ https://www-awu.aleks.com/alekscgi/x/lsl.exe/1o_u-IgNslkr7j8P3jH-liG1Sp4C1qHE9vg-2-exSXq493r_tJ2gZs0a-_xkRSR8a7T-... A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar System. Mass-spectroscopic analysis produced the following data on the isotopes of molybdenum in these samples: Mo 99.91 Mo 95.90 x A ALEKS - Elizabeth Galaz - Learn x mass relative (amu) abundance Mo 0 96.2% Explanation 3.8% Use these measurements to complete the entry for molybdenum in the Periodic Table that would be used on 98765 ALEKS. Round your entry for the atomic mass to 3 significant digits. Caution: your correct answer will have the same format but not necessarily the same numbers as the entry for molybdenum in the Periodic Table we use here on Earth. X Check A A AB Search 3/5 hp A @ 0 LE Elizab…Potentially Useful Information Spectrochemical Series: | < Br < SCN¯ < Cl° < NO3¯ < F° < OH° < C2O4²¯ ~ H2O < NCS° < NH3 < en < PPH3 く A student has three test tubes containing a metal (M) nitrate solution M(NO3)2 (aq) (where "M" represents a generic transition metal). The student adds aqueous ammonia (NH3) to one test tube, aqueous hydrochloric acid (HCI) to the second tube, and nothing more to the third tube, but forgets to label the tubes. After this, one test tube contains a red solution, one an orange solution, and one a yellow solution. Note: This metal, M, would follow the same rules that we used for Cu(II), Ni(II), and Co(II). The Jahn-Teller Effect does not apply. Complete each statement or answer each question below about the solutions in the three test tubes. The aqua complex causes less splitting of the d orbitals of the metal than the... ammonia complex. O chloro complex.SEE MORE QUESTIONSRecommended textbooks for you