Determine the value of the equilibrium constant, Kgoal, for the reaction C(s)2(g)H2(g)=CH3OH(g)CO(g) Kgoal ? by making use of the following information: 1. CO2 (g) 3H2(g) CH:?? (g) + H??(g). ?i 1.40 x 102 2. CO (g)H20(g)= CO2(g)+ H2(g) 1.00 x 105 ?2 3. 2C(s)O2(g)2CO(g) ?? 2.10 x 1047 Part B Determine the equilibrium constant, Kgoal, for the reaction 4PCI5(g) P4(s) 10C12(g), Kgoal by making use
[A 1.00 mol L- What is the final concentration of D at equilibrium if the initial concentrations are and B 2.00 mol L-1?
uestion 20 The product(s) from 1. LIAIH CH,CH—CHCO,C?,??, 2 H?" is/are: ?) CH CH CHCO-H CH,CH-?? + ?) CH-CH—CHCH,?? ?) C?,C?-CH-CH,?? + CH,CH,?? CH,CH2OH + D) C?,??-??,??,??,??, CH,?H-?? + CH-CH—????, Lit FI esc ?: ? Ly A Moving to another question will save this response. « Question Question 21 1 points With this starting compound, what reagents could you use to obtain the
Initially, only A and B are present, each at 2.00 mol L-1.What is the final concentration of A once equilibrium is reached? Express your answer to two significant figures and include the appropriate units. The reversible chemical reaction A(aq)B(a)C(aq) +D(aq) has the following equilibrium const K= 5.8 AB
What is/are the major substitution products for the following reaction? conc. H2SO4 Product(s) CHH?? OH ????. ??. OCH OCHs OH 5 A Product 1 is major B Product 2 is major A 1:1 mixture of 2 and 3 would be major D A mixture of 1 and 5 would be major E A mixture of 4 and 5 would be major
Moving to another question will save this resp Question 3 Butyl propanoate can be prepared by the reaction of propanoyl chloride with butanol butanoyl chloride with butanol butanoic acid with butanol butanoic acid with isobutanol Moving to another question will save stlon 4 Benzoic acid cannot be prepared by which one of the following methods? A) KMnO4 CH3 B) 1. Mg, Et,O 2. CO2 3. ??
Calculate the mass percent composition of carbon in C8H10N4O4. Enter your answer as a number to 1 decimal place.
associate the number with the letter Compound A can be converted into compound G when treated with H2O. Starting with compound A and ending with Compound G, sort the intermediates in the correct order according to the reaction mechanism. Note: treat resonance structures as individual steps that lead to your product. OH Br G) A) OH2 D) C) B) A) G) OH2 B) C) D) E) F) l 4 D Compound F
thi same 4. In the combustion of hyd rogen gas, hydrogen reacts with oxygen from the air to form water vapor Hydrogen + oxygen water If you burn 20.2 g of hydrogen and produce 1.80 x 102 g of water, how much oxygen reacted?
Given the two reactions 3. ???12 (s) 4. AgCl(s) Ag (aq) Cl(ag), K4 =1.29x10-4, what is the equilibrium constant Kfinal for the following reaction? Pb2+ (aq)2C1 (ag), K3 =1.80x10-10, and ???l, (6) + 2Agt (a?) %3D 2AgCI(s) + ???+ (ag)
Given the two reactions 1. ?>S(ag) 3D HS (aq) + H*(ag), ?i-9.66?10-8, and 2. HS (aq) what is the equilibrium constant Kfinal for the following reaction? s? (ag) + H+(?g), ?2 —1.47?10-19, S2- (ag) + 2H* (??) — ?zS(aq) Enter your answer numerically.
How many moles of N are in 85 g N2H4?
A mixture initially contains A, B, and C in the following concentrations: [A] = 0.300mol L1 B 1.40mol L1, and [C] 0.300mol L-1.The following reaction occurs and equilibrium is established: A(ag)2B(aq) C(ag) and [C 0.480mol L1.Calculate the value of the equilibrium At equilibrium, [A] = 0.120mol L constant, Ke -
Based on a XY, X, and Y, respectively? Kc value of 0.250 and the given data table, what are the equilibrium concentrations of Express the molar concentrations numerically. View Available Hint(s) ?? ??? ? XY, X, [Y] M Based on a Kc value of 0.250 and the initial concentrations given in the table, determine in which direction the net reaction will proceed to attain equilibrium. Initial concentrat
could someone please numerate shortly all the functional groups that soluble in water with examples ? especially that one increase the solubility of organic compound in water ?
Chemistry 30 Unit C Module 6 Summative Assessment System 2 Answer (10 Marks) Fully Labelled Diagram Tinoley e T onen bdvlu V6Hner Salt bridge (?A?) Cafhade e(Aoal) AGND3() Oxidation Half- reaction Reduction Half- reaction Net Cell Reaction Cell Notation Empirical Evidence Theoretical Standard Cell Potential
need help with this question please 10 Consider the reaction mechanism that produces the major substitution product for the following scheme. Which intermediate(s) will be generated in the formation of the major substitution product: NaBr H2SO major product OH 2 O A 2 only B 4 only 1 2 3 A 2 only 4 only 1 and 3 3 and 4 E 1,3 and 4
show all work please How many lone pairs of electrons are there on the central atom of sulfur tetrachloride, SCI4? 4 3 1 2
For the reaction 2A(g)3B(g) C(g) Ke 74.0 L4 mol-4 at a temperature of 217 °C Calculate the value of Kp
When backpacking in the wilderness, hikers often boil water to sterilize it for drinking. Suppose that you are planning a backpacking trip and will need to boil 38 Lof water for your group.What volume of fuel should you bring? Assume each of the following: the fuel has an average formula of C7H16; 15% of the heat generated from combustion goes to heat the water (the rest is lost to the surrounding
Part B For the reaction X(g)3Y(g) 2z(g) K2 1.52 x 10-2 bar2 at a temperature of 113 °C Calculate the value of Kc
18. Given that the mass of manganese-55 is 54.9380 u, calculate the total binding energy a. Write the nuclear reaction describing the formation of a manganese-55 nucleus. b. Calculate the change in mass in the reaction described in part a (mass of a neutron 1.0087 u; mass of a proton 1.0078 u). c. Calculate the binding energy (in joules) for one atom of manganese-55 d. Calculate the binding e
please answer handwritten thank you I rate DETERMINATION OF THE MOLECULAR WEIGHT OF AN UNKNOWN COMPOUND BY FREEZING POINT DEPRESSION EXPERIMENT 2 PRE-LABORATORY QUESTIONS Fully answer these questions in your laboratory notebook before coming to lab. Show all work for numerical calculations. Define the following 1. clearly and concisely: terms molality a. b. K c. solute Calcium chloride, CaCl,
name of this structure molecule clorobenzene ....I need the combustion reaction please as soon as posible 9 Khalizov/Avzianova olecule to calculate its Wne 9 Khalizov/Avzianova olecule to calculate its Wne
20. The radioisotope cobalt-60 is used to destroy cancerous cells by directing y-rays into the cancerous cell tissue. Calculate the percent of a cobalt-60 sample left after 20.0 years. The half-life of cobalt-60 is 5.27 years. a. 2.63 b. 7.21 c. 0.00 d. 93.8 e. none of the above
Given the partial pressures of H2O, CO, and H2, what is the reaction quotient Q for the following reaction carried out at 1100 K? C(s)H20() CO(g) H2(9) Gas Partial pressure (bar) ??? 0.400 bar CO 0.100 bar ?2 0.650 bar Enter the reaction quotient numerically
ileyPLUS Klein, Organic Chemistry, 3e Help | System Announcements IMENT RESOURCES r-2 Question 89 stion 1 X Your answer is incorrect. Try again. stion 2 stion 3 Provide the correct condensed structure for the following compound. H H tion 4 stion 5 tion 6 H H H H H C tion 7 tion 8 H- H tion 9 tion 10 H H tion 11 tion 12 H H tion 13 tion 14 tion 15 tion 6 CH NCH, CH,CH,C? ???H, ?H, Edit tion 17
Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the equilibrium concentration of NO2(g) N204(g) 2NO2(g) Kc 0.21 M [N204Jeq 0.068 mol L-1 A) 0.036 mol L-1 B) 0.028 mol L-1 C) 0.12 mol L-1 D) 1.9 mol L-1 E) 0.60 mol L-1
IGNORE REGIOCHEMISTRY (UNTIL LATER CHAPTER) 16.13 Predict the products for each of the following reactions: OMe COOH OMe (b) COOH (c) (a) =CN + NC + (e) (d) (f) OH (h) (g) (i)
A typical frostless refrigerator uses 655 kWh of energy per year in the form of electricity. Suppose that all of this electricity is generated at a power plant that burns coal containing 3.3% sulfur by mass and that all of the sulfur is emitted as SO2 when the coal is burned.If all of the SO2 goes on to react with rainwater to form H2SO4, what mass of H2SO4 is produced by the annual operation of t
Which of the following statements is correct? A) When K 1, neither the forward nor reve rse reaction is strongly favoured, and about the same amount of reactants and products exist at equilibrium. B) When K> 1, the reverse reaction is favoured and essentially goes to completion. C) When K 0 the reaction is in equilibrium. D) K 1 implies that the reaction is very fast at producing products. E)
Consider the following reaction and its equilibrium constant: 4CuO(s)+CH4(g)=co2(g) + 4Cu(s) +2H20(g) Kc 1.10 A reaction mixture contains 0.22 mol L-1 CH4, 0.67 mol L-1 CO2 and 1.3 mol L-1 H20. Which of the following statements is TRUE concerning this system? 4) A) The reaction quotient is greater than Kand therefore the reaction will shift in the direction of reactants. B) The reaction will shif
10. What happens when aqueous benzaldehyde is treated with aqueous NaOH for an extended period of time? Draw all intermediate steps and the key transition state (as discussed in lecture) 10 pts NaOH H20 Ph
“How many electron pair domains does the atom indicated possess?” I answered 3 but the correct answers are both 4. Can someone please explain why? Thank you! Question #: 7 How many electron pair domains does the atom indicated possess? CH? CH H CH2 ??? C.4 B.3 A 2 Question #: 8 How many electron pair domains does the atom indicated possess? H2 C-CHs ???? 4 B. 3 II CH A, 2
9. Draw the intermediate A and the product B. When trace LDA is used, a different product is formed what is the product and why does it not form when a full equivalent of LDA is used. Briefly explain 10 pts 1 eq. LDA A CH3 LDA: N THF 0.5 eq LDA THF
8. For the following redox reaction: 3 PbO( 3 H2O +3 Pb) 2 NH3(ag) N2e) Identify the element going through oxidation and reduction b. Identify the reducing agent and the oxidizing agent. a.
8. Draw the catalytic cycle (all key steps) for the proline-catalyzed reaction below. Don't worry about the absolute stereochemistry of the product 10 pts COOH H H + NO2
6.1 Assign oxidation numbers for each of the elements participating in the following reactions. 2NO (g)O,(g) 2NO2(g) 2 Mn*(aq)+2 H,O(l) - MnO,(s) + Mn2+(aq) + 4H*(aq) LiCoO2(s)+C(s)LiC(s)+ CoO,(s) Ca(s)+H,(g)- CaH2(s)
show work please D Question 10 What is the molecular geometry of nitrite ion, NO2? Bent Seesaw Trigonal planar Linear Tetrahedral
need help with this question please What is the stereochemistry of the product of the following reaction? H Br KCN ? Acetone MeO A 2R, 3R B 2R, 3S C 2S, 3R D 2S, 3S
[A], M 0.25 [B), M 0.050 0.10 Kate (vUS 0.050 0.050 1.1 Trial 1 3.4 Trial 2 0.75 1.0 x 10 0.15 0.10 Trial 3 0.75 0.050 3.4 0.050 Trial 4 0.75 o.0s0m O.75 Mc 0.25 Lopso 0.75MM 6.104 3.4 O.TSMJ LO.OT 2-1 9.7M O.75 H 0,IS 16 as Co.2scoosouo.osou OrDHIsK CTSCO.o o.IS 64-KC075)oosoo.050 Rate law: K 90 90 k= 7. Using the rate law from question 9, find the rate of the reaction when 12.0 mL of 0.88 M
Add lone pairs to each heteroatom. Then draw at least 2 reasonable resonance structures for each structure. NH2 C. b. a. AIarn +he maIcele.eentaine more than one tyne of hudrogen
Why do the SN1/E1 reactions of tertiary alkyl halides favor the substitution product? Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain ead Reset Help carbocation The product does not require a elimination bond to be broken in the but the product does. substitution carboanion
show work please e Configuration of Atoms, Lewis Structures, and Molecular Geometry What is the ot Question 7 Next three questions apply to the Lewis structure of sulfate ion, How many double bonds are there in the Lewis structure for sulfate ? 2 Question 8 Question 8 How many lone pairs of electrons are there on the central atom of SO 2? O 3 O 1 O 4 O 2 Question 9 Question 9 2 What is
5 of 33 Review I Constants I Periodic Table Part A Learning Goal: Solve for z, where M is molar and s is seconds To review and practice working with powers denoted as negative exponents. z(2.3x 10 M Enter the answer. Include units. Use the exponent key above the answer box to Indicate any exponent on your (0.46 M) You will also need to understand how negative exponents work. This is important
7. How would you differentiate the following four molecules if you only had 1H NMR spectra of them? Think multiplicities 10 pts CI CI CI CI CI
Molecular Models - Organic Chemistry ?????? ? ? Points: Name: 1. Make Methane, Ethane, Propane and Butane. Please draw the structures in the dashed-wedge line form below: 2. With the model of butane, please draw the Newman Projection of butane in eclipsed, gauche and anti conformations along C2-C3 bond. 3. Make a model of hexane and its constitutional isomers like hexane, 2-methylpentane, 3
6. The two building blocks below can be coupled using Suzuki chemistry. Draw the catalytic cycle of the reaction and name all key steps. It is OK to abbreviate the reacting partners as R-Br and R2-B(OH)2. What is the reaction product? 10 pts ?(??)2 Br Me Pd(0), THF, CS2CO3, 40 °C, 24 h
1.Draw the a fsher projection for the products of the folowing 52 reactions HC NDCH 4 ???? Chaose the member of each pair thut will react faster by the S,1 mechanism Draw the chemical 2. structures a)1-bromopropane or 2bromopropane 2bromo-2mathyl butane or ethyl iodide 3. Propose a mechanism invalving a hydride shift or an alkyl shift for each solvolysis reaction. Explain how reamangement for
4. If you heat the two dideuterobutadiene (below), the molecule will undergo an electrocyclization. Is it con- or disrotatory? What is the orbital that determines that? Draw the final product including relative stereochemistry 5 pts
show work please What is the electronic configuration of Cr? 1s22s22p63s23p 4s23d O 1s22s22p63s23p64s2 1s22s22p63s23p64s24d4 1s22s22p 3s23p63d
Drag the appropriate equilibrium expression to the appropriate chemical equation. Drag the appropriate equlibrium constant expression to Its respective bin. Vlew Availlable Hint(s) Reset Help H2(g) +1,(g) 2HI(g) H2(g) +I,(8) PC (8)+Cl(8) PCl, (g) PCl, (s) PCI,(8) +Cl,(8) ash 2HI(g) PC C PC PC, Cl K HT Ke Ke PCI Ke
For H2SEO3, pKa1 is 2.62 and pKa2 is 8.32. What is the pH of a 0.50 M Na2SeO3 solution? (to_tenths_place) 7.0 4.3 9.7 O 3.0 11.0
7. Which among the following represent a set of isotopes? Atomic nuclei containing: 20 protons and 20 neutrons 21 protons and 19 neutrons 22 neutrons and 18 protons 20 protons and 22 neutrons 21 protons and 20 neutrons II. IIII. IV. V. A) ,II, II B) III, IV C) 1,V D) I, IV and II, V E) No isotopes are indicated Explain your choice in your own words- CONVERT FROM MASS TO MOLS 1. 30.0 g of Pho
A is atomic mass number and Z is atomic number 5. Complete the table below -remember Net #of neutrons electrons charge #of symbol #of protons 238a2U 20 2+ 20 899Y 39 36 35 44 15 16 3- Show your work- LO 24Mg, 25Mg and 26Mg. 6. Calculate the elemental atomic mass of Mg if the naturally occurring isotopes Their masses and abundances are as follows: Isotope Atomic 24-Mg 25-Mg 26-Mg are Mass I
11% 06/09/19 (3 points) Part 3 How many protons and neutrons does this nuclide contain? Identify the element + + protons neutrons Flement svmhol 2OF 13 QUESTIONS COMPLETED <03/13 > MacBook Air + + 06/09/19 This is a Numeric Entry question /It is worth 1 point/You h 04 Question (1 point) Naturally occurring boron consists of two isotopes: isotope #1:natural abundance of 20.00% and a
1). Automotive antifreeze contains ethylene glycol, CHa(OH)CHa(OH), a nonvolatile nonelectrolyte, in water. Calculate the freezing point of a 25.0% by mass solution of ethylene glycol in water. (Kr of water is 1.86 °C/m) over 2). Referring to the following table, calculate the freezing point of a solution containing 0.600 kg of CHCI3 and 42.0 g of eucalyptol (C10H1 80), a fragrant su bsta
show work please What is the electronic configuration of Cr? 0 1s22s22p63s23p 4s23d O1s22s22p63s23p 4s2 01s 2522p 3s23p 4s 4d o 1s22522p 3s23p 3d4
37. Give the product of each of the following reactions. CH,NH (a)
Question 10 0/2 points HgSO, HSO ?.? ?.?—? ?—? 2. H Predict the major product of the reaction shown. CH3C(??)-CH2 (CH3)2C=O CH3CH2CHO CH3CH-C??H (cis) CH3CH-CHOH (trans) Hide Feedback Incorrect!
1. Which of the following pairs of compounds can be used to illustrate the law of multiple proportions? A) NH4 and NH4Cl ZnO2 and ZnCl B) H2O and HCI C) NO and NO2 D) CH4 and CO2 E) Explain your choice in your own words- A sample of chemical X is found to contain 5.0 grams of oxygen, 10.0 grams of carbon, and 20.0 grams of nitrogen. The law of definite proportion would predict that a 70-gram
5.24 Select the compound on each line with the named characteristic and state the reason for your choice. (a) Strongest Lewis acid: BeCl BCI B(t-Bu) BF BCI, BBr, B(n-Bu)s (b) More basic towards B(CH,), Me,N Et,N 2-CH,C,H,N 4-CH,C,H,N
show work please What are the possible values of mi when I 2? O 0, 1,2 O-2,-1,0, 1,2 0, 1, 2,3 O-3,-2,-1,0, 1,2, 3
What is condensation polymerization? Please explain in depth what it is and what occurs during this reaction. Provide examples for this as well. Note: This is for beginners chemistry
5.11 H,PO4, H,PO, and H,PO, all have a pK value of 2, but the pK values of HOCI, HCIO,, and HCIO, are 7.5, 2.0, and -3.0, respectively. Explain this observation. 33
4 Which of these products is the solid that is formed in the reaction? 5. Write the formula for sodium bicarbonate 6. What is the gas that is formed when sodium bicarbonate reacts with acetic acid? When the pennies acid to form copper acetate according to the reaction: 7. placed in the vinegar, the copper oxide coating reacts with citric are CuO(s)+2 HC2H3O2(aq) Cu(C2H2O2)2(aq) + H2O(1) Which
A. Decomposition Reactions 1. What gas is formed when hydrogen peroxide decomposes? Write the chemical reaction for the decomposition of hydrogen peroxide. Yeast is a catalyst (speeds up the reaction) and does not take part in the decomposition. 2. Double Rep lacement Reactions B. 1. Write the formula for magnesium sulfate 2. Write the formula for ammonium hydroxide Follow the steps for writi
Teaho 5. Suppose that a 450.0 g sample of acetone at 25.0 'C loses 65.0 kJ of energy when placed in a laboratory freezer. What is the final temperature of the acetone? Is the acetone in the solid, liquid, or gas state at this temperature? Explain how you know. 6. If you drop a 10.0 g piece of aluminum at 125.0 °C into 100.0 mL ( 100.0 g) of water at 25.0 C in a well-insulated container, what
The density of ice at 0°C is 0.9168 g mL1 (this is g/mL), and that of liquid water at 0°C is 0.999 g mL1. What is the volume of 1.000 g of water? (assume 0°C): O 1.001 mL O 1.091 mL O 0.999 mL O 0.9168 mL
Write out the reaction of a hydrocarbon with potassium permanganate. Predict which classifications of hydrocarbons you would expect to undergo this reaction.
Write out the reaction of a hydrocarbon with bromine. Predict which classifications of hydrocarbons you would expect to undergo this reaction
Question 3 The volume of the nucleus of a carbon atom is about 9.9x1029 mL The molar mass of carbon is 12.00 g mol. What is the density of the carbon nucleus? 08.25x10 g/mL o 119x10g/mL o 121x10 g/mL Question 4 Liquid mercury has a density of 13.6 gmL. Which of the following substances will float on mercury? Density gml1 Substance neptunium nickel osmium zinc 20.4 89 22.6 7.1 114 lead O Osm
You will not perform this experiment this week, but combustion analysis is a commonly used technique when identifying hydrocarbons. Based on your knowledge of the reactivity of the different types of hydrocarbons, articulate an argument for using this technique for this determination.
If a doughnut contains 1.8 moles of sugar (C6H12O6), how many sugar molecules are in a box of one dozen doughnuts? A. 1.8 x 10^23 B. 21.6 x 10^23 C. 130.032 x 10^23 D. 518.4
Predict the reactivity of propane, 1-propene and 1-propyne in (a) water and (b) hexane. Provide a reasoning for your solubility assignments.
For the reaction 2NO2 + F2 2NO2F, the rate constant is 38M-1s-1. The reaction is first order in NO2 and first order in F2, being of the second order total. Calculate the concentration of NO2, F2, and NO2F present after 30.0 seconds, if initially 3.00 mol of NO2 are mixed. with 1.00 mol of F2 in a container of 400 dm3 at 27oC.
CaieurauvIDn Exercise 16.8 Calculate the following at 25°C, using Tables 16.1 and 16.2: a. K, for F; of aniline, C&H5NH2). b. Kg for C H,NH (conjugate acid Table 16.2 Base-lonization Constants at 25°C Substance Formula Kp Ammonia NH3 1.8 X 10- Aniline C&H&NH2 4.2X 10-10 Dimethylamine (CH,)2NH 5.1 x 10-4 Ethylamine CH&NH2 4.7 X 10 Hydrazine N2H4 1.7 x 10- Hydroxylamine NH
show all work please DQuestion 1 What is the wavelength, in nm, of a photon whose frequency is 5.09 x 1014 Hz? 170 nm O589 nm 169 nm 598 nm Question 2 Alkaline Earth metals have electrons in their valence shell. 6 O 2 0 3 O 1 Question 3 What is the frequency of a photon that possesses energy E-3.37 x 10
(1 pts) An NaNO3 solution is titrated with a solution of HCI. At the equivalence point, this solution will be neutral basic acidic
Search for three primary sources of information from within the past decade which provide the reaction of 2?butoxynaphthalene (uses butoxynapthalene to synthesize another compound). Any help is greatly appreciated, I haven't been able to find any sources.
Question 1 The density of ice at 0°C is 0.9168 g mL:1 (this is g/mL), and that of liquid water at 0C is 0.999 g mL:1. What is the volume of 1000 g of ice (assume 0C)? 0.999 mL O 0.9168 mL o 1.001 mL o 1.091 mL D Question 2 The density of ice at 0°C is 0.9168 g mL:1 (this is g/mL), and that of liquid water at 0PC is 0.999 g mL*1. Asealed glass container with a capacity of exactly 100 mL cont
answers to 10 and 11? Question 10 1 pts An ionic bond can occur between each of the following except which of the following? metal and non-metal non-metal and non-metal polyatomic ion and polyatomic ion polyatomic ion and non-metal metal and polyatomic ion Question 11 1 pts Which of the following is true about a triple bond? A triple bond is as strong as an ionic bond. A triple bond is longer
Which of the following are sites for nuclear fusion? Select all that apply: Inside the sun Inside the earth's core Inside thermonuclear weapons Inside all stars
Saved Chemical Equilibrium) Check my work 3 attempts left Be sure to answer all parts. The dissociation of molecular iodine into iodine atoms is represented as 1@=21(g) At 1000 K, the equilibrium constant K, for the reaction is 3.80 x 10. Suppose you start with 0.0454 mol of 12 in a 2.28-L flask at 1000 K. What are the concentrations of the gases at equilibrium? What is the equilibrium concen
The Energy Model (Conceptual Questions)- Answer both questions 1. A container of hot soup is placed in the freezer in your kitchen until it freezes. Is this process exothermic or endothermic? How do you know? a. b. How does the temperature of the soup change from the initial to the final state? Sketch a heating or cooling curve to support your explanation. Describe how the motion and/or arrang
the correct answer is D. Explain please 2+ 44. The concentration of Fe (aa) can be determined by a redox titration using A KBr B. SnCl2 ?. ??n?? (basic) D. KBrO, (?cidic)
4. How is the mass percent of elements in a compound different for a 1.0 g sample versus a 100. g sample versus a 1 mole sample of the compound? 3. There are two binary compounds of mercury and oxvgen, Heating either of them results in the decomposition of the compound, with oxygen gas escaping into the atmosphere while leaving a residue of pure mercury. Heating 0.6498 g of one of the compound
IMe answers i did: his is not an issue if work is shown "How Much" and "How Many" Relationshins: Counting by Weighing Pick 2 from questions #1-3 (do more/ all if you need the learning!) 1. Rust is composed of iron(II) oxide (chemical formula Fe,O). The owner of a 1959 Cadillac convertible wants to restore it by removing the rust with oxalic acid, but he needs to know how ma
109. A solution is prepared from 4.5701 g of magnesium chloride and 43.238 g of water. The vapor pressure of water above this solution is 0.3624 atm at 348.0 K. The vapor pressure of pure water at this temperature is 0.3804 atm. Find the value of the van't Hoff factor (i) for magnesium chloride in this solution. 12
16.53 What is the concentration of hydroxide ion in a 0.060 M aqueous solution of methylamine, CH3NH2? What is the pH?
answers to 15, 16, 18, 19 Question 15 1 pts In the Lewis structure for C3H4Bra, how many non-bonding electrons are present? Question 16 1pts What is the maximum number of triple bonds that can form between two carbon atoms? 1 pts Question 18 Arrange the following bonds in order of increasing polarity: H-I, H-F H-CI, and H-Br. [Select [Select] [Select] Select] 1 pts Question 19 What is the f
12 Wch n te e acd H F ca w ele nim yp w w poipoive 5 6 4 r y t w Whte moy 9ofKCs dv 3 2 727M en CHSH 12 Which i the be le reprso of a f the weak acid H For clt omi water moleue 17 When a sampe of KNO ws cld to the ch Fort waluion i hyp NG 18Wh 6 4 3 2 is added waes 15
1. For each of the following REDOX reactions state the oxidation number for each ion in the reaction. State which one is being oxidized and which one is being reduced as well as how you know. State which one is the oxidizing agent and which one is the reducing agent as well as how you know I MnSO4 CO2 +H20 MnO2 +H2C2O4 +H2SO a. I2 +H20 b. ???? + HI PH + Zn + MnO2 + NH&CI ZnCl +Mn2O3 + NH,
109. A solution is prepared from 4.5701 g of magnesium chloride and 43.238 g of water. The vapor pressure of water above this solution is 0.3624 atm at 348.0 K. The vapor pressure of pure water at this temperature is 0.3804 atm. Find the value of the van't Hoff factor for magnesium chloride in this solution
For the reaction C(graphite,s) + (1/2)O2(g) -> CO (g) At 298 K, The value of ?E is ________ (see table below) choices are: -196.7 kJ -197.9 kJ -199.1 kJ +197.9 kj +196.7 kJ thank you! (see table below) Thermodynamic Quantities for Selected Substances at 298.15 K (25°C) AHUmo AGmo $-mol Substance Carbon C (5, diamond) C 6, graphite) C2H2 ( C2H4 () C2H4(E CO (E) 1.88 2.84 2.43 5.69 0 0 226.7 209
Give the mechanism, including curved arrows, for the cleavage of 2-methyly-1-phenyl-1,2-propane diol using sodium periodate, Nal04. Must have clear mechanism for full credit. OR, give the mechanism for the Olefin Metathesis using Grubb's Catalyst and 2-hexene. 15pts 2.
When propanethiol is mixed with I2, the product of the reaction would be: CH3CH2CH2SSCH2CH2CH3 or CH3CH2CH2SCH2CH2CH3
5. One way to remove magnesium (Mg) from water is to precipitate it with a strong base such sodium hydroxide (NaOH). The following unbalanced reaction describes the process. (a) Calculate the concentration of NaOH (mg/L) needed to completely remove 25 mg/L of Mg (b) Calculate the mass (in kg) of solid Mg(OH): that will be produced (and must be disposed of) if this reaction is performed in 2.3
Moving to another question will save this response. Question 10 Which molecule has the highest boiling point? H H-N H-R N H save this response. Moving to another question will save this response. Question 10 Which molecule has the highest boiling point? H HN-H ??Z
2. You have an empty 42-gal barrel and a 5-lb bag of dry alum, Al2(SO4)s and are interested in making a 0.05 M solution with these materials. (a) Calculate the number of gallons of 0.05 M solution you can make with the materials you have on hand. (b) Suppose you put all the alum in the barrel and filled it full. Calculate the molar concentration of the resulting solution.
chemical kinetics. chem 2 CHIM TU0 UCHea- 12. For a given reaction, the reaction rate constant is 7.4 x 10% M's at 25.0 °C and the reaction rate constant is 2.3 10 M's at -10.0 °C. Calculate the X activation energy for this reaction.