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Tab Minbox (1,600)-fantilOudeledu X Mail- Francesca A Tantillo-Out xEXP #12: Geometry-CHM150-2x Aktiv Chemistry ← → C < Esc app.101edu.co Mostly sunny O ! D 7 A Silane, SiH., is a colorless, pyrophoric, toxic gas that is used to deposit elemental silicon for semiconductor and photovoltaic applications. Given the electron configuration of Si is [Ne]3s 3p2, how many valence electrons does Si have? Z 2 W S X # 3 E D $ 4 C OL R F % 5 FS T Question 18.b of 23 V G ^ 6 Y B & 7 H PrtScn U N 8 J Home ( 9 M K X End O 1 4 7 +/- PgUp 0 2 5 8 1. P 3 - 6 9 0 Pgon $12 0 APD + Update Submit C x 100 5:21 PM 7/6/2022 X 10 Del Backspace

D²1 Quizzes - Spring 2023 SPE XQ Ch 12-14, 18 Public speakin x с app.101edu.co < + 1 Ch 12-14, 18 Public speakin x + Balance the following chemical equation (if necessary): V₂O(s) + HCl(aq) → VOCI (s) + H₂O(1) 2 04- Reset 0 ♡ 2 3 VOCI ( ) 4 D2L Quiz 10-12 - Spring 2023 C X Time's Up! H₂O □ 5 n 0₂ ☐3 04 05 06 л O) 6 + 2+ 7 07 V.O. 2 5 ल = (s) (1) y google - Yahoo Search Rest X ³+ 4+ 8 9 ☐8 • x H₂O 0 (g) (aq) HCI 口。 Delete Aktiv Chemistry G + Update: Submit

7. Solve for T q = mc(T; – T;) тс |

ICottiz 0, + 6O2> 6CO +6077 6COz+ L6+H2O+362,5 KJ What cre the molars masses you might need ? O2?

- = T C 54°F Humid % Explanation O CHEMICAL REACTIONS Percent yield of chemical reactions 2 W |HC|HL| (@F11218HCHIHUSI https://www-awu.aleks.com/alekscgi/x/Isl.exe/10_u-IgNslkr7j8P3jH-IBMBkpcnaFu0F7Uj... FAX S Check بهر 3 * E $ X Gaseous ethane (CH₂CH3) reacts with gaseous oxygen gas (O₂) to produce gaseous carbon dioxide (CO₂) and gaseous water (H₂O). If 0.469 g of water is produced from the reaction of 0.90 g of ethane and 5.2 g of oxygen gas, calculate the percent yield of water. Round your answer to 2 significant figures. 4 0 d R DE C Ś 96 % 5 T 6 G H "4+ & 7 B N U 144 * 00 C | 141 | a A 8 1 D-II ( 9 r K M || a ✓ DDI O s ) B Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | | O F ▬▬▬▬▬▬ fo 1 11² a P MC - MC insert C + 3/5 = prt sc } ♡ 4 Privacy Center Privacy Center | Acces 1 0 Chisom Seve E d 11:10 10/22/20

ll T-Mobile Wi-Fi ? 2:31 PM @ 7 51% 23obrienm Fer... CHE222 Ch 9.2 Balancing & Classifying Chemical Reactions Types of Chemical Reactions Balancing Chemical Reactions 1)_ N, + H, - NH, 2) KCIO, → _ KCl + O, 3) NaCl + F, -__ NaF + Cl, 4) Н, + H̟0 5) _CH, + 0, →. СО, + H,O 6) _C,H, +_ 0, → __CO, + H,0 7) С,Н, + 0,- _CO, + H,0 8) P + _0, → __P,O, 9) Na + H,O → NaOH + H, 10) Ag,O → __Ag + _0, 11) S, + _SO, 12) K + MgBr,→ KBr + _Mg

→ C app.101edu.co STARTING AMOUNT esc 1 X 2 F2 CO #m 3 1 The average adult human burns 2.00 × 10³ kcal per day in energy. What is this rate in kJ per hour ? J ADD FACTOR * ( ) X 4184 F4 $ 4 cal 0 349 2.00 × 10³ F5 % 5 kJ Question 26 of 35 O 1000 2.01 x 10⁰ min M 6 31 = 0.001 F7 ANSWER 24 kcal/day O & 7 1.15 x 105 20.0 C F8 S 8 RESET 2 4.184 F9 kcal X 9 F10 60 hr F F11 8 Jan 21 F1Z2 3:17 6 delete Submit + backspac

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[(2.77 x 10^6) / 45.716] + 134.10

Urgent and thanks

Please round the answer.

Please refer to photo and show work! Thank you very much!

3. (a) jf 10.0 mjL of H2jSO4 (sp. jr. 1.50, containing 48.7% of combined SO3 by weight) is diluted to 400 mL, what is the normality of the solution as an acid? (b) What volume of 6.00 M H2SO4 should be added to this in order to make the resulting mixture 1.00N as an acid? FW's : H2SO4 = 98; SO3 = 80 %3D

Please all solve the problem

change in enthalpy

C https://app.aktiv.com Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electron-pushing arrows for the following reaction or mechanistic step(s). Be sure to account for all bond-breaking and bond-making steps. LIO Select to Add Arrows L[ICH CH CH₁₂Cu] Cu Select to Add Arrows CH.CH.Br LIO 10: Br 00:

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2. Set the two equations equal and isolate In Ksp on one side of the equals sign by dividing both sides by (-RT). AG=RT'In Ksp=AH-TAS/-RT AG=In KSR=AH-TAS/-RT| 3. Create a graph using Excel plotting In Ksp on the y-axis and 1/T (make sure the units for temperature are Kelvin) on the x-axis. I In KSP 0 0.0029 -0.5 -1 -1.5 -2 -2.5 -3 -3.5 -4 -4.5 -5 0.003 0.0031 0.0032 1/T 0.0033 0.0034 0.0035 y=-2738x+5.075 R² = 0.9845 0.0036 a. Use the value obtained for the slope of the graph to solve for AH° using the equation derived in Question 2.

What are the units of KM? O S Omolar O 1/s ● s/molar O 1/molar Omolar/s

36 of 42 * Enthalpy Constants Periodic Table Enthalpy H is a measure of the energy content of a system at constant pressure. Chemical reactions involve changes in enthalpy, AH, which can be measured and calculated: ngs Part A AHan =Eproducts mAH; Eresctants nAH Determine the enthalpy for this reaction: where the subscript "rxn" is for "enthalpy of reaction" and "f" is for "enthalpy of formation" and m and n represent the appropriate stoichiometric coefficients for each substance. Al(OH)3 (s) + 3HC1(g)→AIC13 (s) + 3H20(1) Express your answer in kilojoules per mole to one decimal place. > View Available Hint(s) The following table lists some enthalpy of formation values for selected substances Substance AH (kJ/mol) HCl(g) -92.0 kJ/mol Al(OH)3 (s) -1277.0 AH = H20(1) -285.8 AlCk (s) -705.6 Submit Previous Answers H20(g) -241.8 X Incorrect; Try Again; 26 attempts remaining Part B P Pearson 1 3.56 acer

Calcule el potencial estándar de la media reacción: HgS(s) + 2 H* (aq) + 2 e --> Hg() + H2S(g) si para la celda a continuación: Cd [Cd2*(1 M) || HgS(s) H* (1 M)| Hg() | H2S(1 atm)| Pt E°celda= -0.317 V y E° (Cd2+/Cd)= -0.403 V E° (HgS/Hg)= ? Seleccione una: a. 0.400 V b. 0.086 V O c. 0.720 V d. -.086 V e. -0.720 V

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The average lethal dose of heroin is 1.52 mg/kg of body weight. If a 300lb man consumes 0.25g of heroin, has he overdosed? Explain the reasoning behind your conclusion and show all calculations used. Edit Format Table BIUA 2 T| : 12pt v Paragraph v

A 25.00cm of potassium dichromate(K,Cr,CH so lution aretadded to an acidified aqueous solution of potassium lodide(present in excess). The lodine was then liberated according to the equation K-Cr.O;(aq) +14- (aq) + KI(ag) K(aq) + Cr (aq) + H;O(1) + 12(aq) Required 19.63cm of a 0.1478M Na S,O for complete reaction. The equation for the reaction of between Na S;03 and I2 is 2(aq)+ Na;S;SO;(aq)-Na S4O6(aq) + Nallac) Calculate the concentration of potassium dichromate (only 4 decimal places) mol/L

F i n d  t h e   p H  a t   e qu i v a l en c e   po i n t  i f :  A   5 0 m L    o f     0 . 1 2 0  M      H C N (K a H C N  = 6 . 2 0   x   1 0 - 1 0 )  I s   t it r a  te d   w i t h   0 . 1 0 0   M   N a O H.

NAMING AND DRAWING ORGANIC MOLECULES Naming normal alkanes Name these organic compounds: 43°F Mostly clear Н-С H H-C attent | H Explanation H H H | | | C ▬▬▬▬ H structure H H H — Check H H ||| | | C-C H H H [ H H H H K - C-C-H H H C H 1 H-C-H | H — C-C-H | H H H 4450044 X Q Search I name 0 0 I s K 1/3 뜨 Jessica V © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility BACKSPRCE ? olo Ar 9:14 PM 4/23/2023 }+ \ 7 e (01

P5.1. Calculate ArxnSoof the reaction: + ½ Ozle) H,Oe) a. at 25 °C b. at 1000 °C Given: 5° /R at 25 °C: H2ie): 15.7041 O2le): 24.6604 H,0R: 22.6984 Cp /R at the temperature range: H2le): 3.4958 - 0.1006 x 103 T/(K) + 2.419 x 107 T²/(K²) Ozleg: 3.0673 + 1.6371 x 103 T/(K) + 5.118 x 107 T/(K?) H,0je: 3.6330 + 1.1950 x 10-3 T/(K) + 1.340 x 10-7 T2/(K2)