It is often necessary to do calculations using scientific each of the following calculations. 4.94 x 105 +6.77 × 10-4 7.84 x 10³ +4.94 × 105 2.86 × 10-4 = 8.30 × 10-5 (4.94 × 105) (6.77 × 10-4) Submit Answer Retry Entire Group 9 more group attempts
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- es Tab Window Help oard | Universi X Bb Exam 4 review - General Chem X Periodic Table of Elements - P X e/content/file?cmd3Dview&content_id%=_3710564_1&course_id%3_72361_1 30. When heated, azomethane decomposes into nitrogen gas and ethane gas. CH;N=NCH3(g)→ N2(g) + C¿H(g) -> Bond Energy (kJ/mol) 413 305 Bond Bond Bond Energy (kJ/mol) 163 С-Н C-N N-N N=N 418 С-С 346 N=N 945 Using average bond energies, calculate the enthalpy of reaction.1 ← 4 alt 1 4 7 +/- ctri 1 2 5 8 . € 40 pause mol 3 6 9 0 backspace 1 9 Su enter X C x 100 7/244) __ H2 + O2 0 H20 HCI O Pb(OH)2 + AIBR3 + Al2(SO4)3 5) H20 + PbCl2 6). K2SO4 O KBr + 7) CH4 + O2 0 CO2 + H2O 8) _ C3H8 + 02 O2 0 СО2 + H20 9). C3H18 + O2 CO2 + H20 10). FeCl3 + NaOH Fe(OH)3 + Nac
- what are the coefficients missing on the following equation?_KN03+_H2CO3--->_K2CO3+_HNO3 O (2,1,1,2) O (0,0,0,2) (2,2,0,0) O (0,0,0,0) O (2,2,2,0)Chrome File Edit View History Bookmarks People Tab Window Help HOc Dashbc X E Buy Es: X G find so X © Periodi x A ALEKS X M Mathwa X Hcc Chapte x H New m x ト→ C A www-awn.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IQİHQRDYV_6Ux63SypJXz0Coxvwqgg4JkWI7Cge0xmXkyh... O GASES Using Charles's Law Jacqueline An arctic weather balloon is filled with 48.4 L of helium gas inside a prep shed. The temperature inside the shed is 9. °C. The balloon is then taken outside, where the temperature is -42. °C. Calculate the new volume of the balloon. You may assume the pressure on the balloon stays constant at exactly 1 atm. Round your answer to 3 significant digits.Calculate the solubility at 25 °C of PbCrO 4 in pure water and in a 0.0020 M Na,CrO4 solution. Round both of your answers to 2 significant digits. solubility in pure water: solubility in 0.0020 M NazCrO4 solution:
- so the questions are answer but I have some questions so how they got 2I- and how they got 2.22x10-8 in the bottom like I want to know the process of finding 2.22x10-8? so How they knew to put H2O on both side and CN-and the math process to find o.6 and how they got 1.929x10-5?M Inbox (21,026) - sarahnasri522 × b Answered: Determine the mass X → C < + app.101edu.co Aktiv Chemistry X b Success Confirmation of Quest x Time's Up! 2 What is the mass percent of water in Ca(NO3)₂.4 H₂O? Provide an answer to two decimal places. G Google 1 4 7 +/- 5 x + 2 3 8 % 6 9 G 0 Submit X C x 100Help 100% 2 Tue 4: Public Health Ch x * HSC 258 - Major Projec X * Mind Tap - Cengage Lea X C The Illustration To The d=55750828934189288909969212&EISBN=9781305657571&id=1061392007&nbld%3D21... * O TO Q Search this co References Use the References to access important values if needed for this question. For the following reaction, 6.43 grams of sulfur dioxide are mixed with excess oxygen gas . The reaction yields 6.30 grams of sulfur trioxide . sulfur dioxide(g) + oxygen(g) sulfur trioxide(g) grams What is the ideal yield of sulfur trioxide? What is the percent yield for this reaction? Submit Answer
- b Answered x Co. How to Ca x N NSU Logir x PeriodicTa XM Action Rec X 0 mySigTau X G 4.25 ml to X NBA Final xG scientific c X + w.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=assignment-take [References] In 1897 the Swedish explorer Andreé tried to reach the North Pole in a balloon. The balloon was filled with hydrogen gas. The hydrogen gas was prepared from iron splints and diluted sulfuric acid. The reaction is Fe(s) +H2SO4 (ag) → FESO4(aq) + H2 (g) The volume of the balloon was 4800 m and the loss of hydrogen gas during filling was estimated at 20.%. What mass of iron splints and 98% (by mass) H2SO4 were needed to ensure the complete filling of the balloon? Assume a temperature of 0°C, a pressure of 1.0 atm during filling, and 100% yield. Mass of Fe = Mass of H2SO4 g Submit Answer Try Another Version 3 item attempts remaining Previous Next Email Instructor Save and Exit Cengage Learning | Cengage Technical SupportA ALEKS -ANNETH SUAREZ PALO b My Questions bartleby G chloride gas formula - Google Se + X X X X www-awn.aleks.com/alekscgi/x/lsl.exe/10_u-lgNslkr7j8P3jH=lJxk3WxUPZu2ctUcqMoMnclLczXr-FFXXXD80N _ka_pcCZy5sprvocbD6q.. The magic button (137) YouTube Dashboard Google Sarahah Anneth 1/4 X O CHEMICAL REACTIONS ANNETH Finding mole ratios from chemical formulae This is the chemical formula for epinephrine (the main ingredient in adrenaline): CgH1303N A biochemist has determined by measurements that there are 0.0211 moles of carbon in a sample of epinephrine. How many moles of nitrogen are in the sample? Round your answer to 3 significant digits. mol Explanation Check o2019 McGraw-Hill Education. AJI Rights Reserved. Terms of Use Privacy 9:36Help 100% Public Health Ch X HSC 258 - Major Projec X Mind Tap - Cengage Lea X C The Illustra d%3D55750828934189288909969212&elSBN=9781305657571&id%3D1061392007&nbld%3D21... References Use the References to access important values if needed for this question. For the following reaction, 66.8 grams of silver nitrate are allowed to react with 24.6 grams of copper(II) chloride. silver nitrate(aq) + copper(II) chloride(s) silver chloride(s) + copper(II) nitrate(aq) grams What is the maximum amount of silver chloride that can be formed? What is the FORMULA for the limiting reagent? grams What amount of the excess reagent remains after the reaction is complete? Submit Answer