After carrying out the following operations, how many significant figures are appropriate to show in the result? (13.7 + 0.027) ÷ 8.221

Q: Consider the reaction: BaSO4    Ba2+ + SO42-; Ksp = 1.1 x 10-10 What is ΔG° at 25 °C?     57 kJ/m...

A: Given Data :  1. Ksp = 1.1×10-10  2 . Temperature = 25oC                             = (25+273)K    ...

Q: At 100°c and 2 bar pressure, the degree of dissociation of phosgene is 6.30 x 105. Calculate the equ...

A: The reaction given is, => Given: Degree of dissociation = 6.30 × 10-5  Temperature = 100 oC And ...

Q: 15) Which one of the compounds corresponds to this IR spectrum. NH2 1000 2000 3000 4D00

A:

Q: he sond feleases heat D. the process is endothermic 9. Hess's Law states that a chemical reaction is...

A: Hess law states that a chemical reaction is independent of route. Complete solution is given below i...

Q: Answer the expression below with the appropriate number of significant figures. 2.4 x 10-4 + 3.1 x ...

A:

Q: Identify the reaction type ) 2K t Brz>2KB. 9) 2 NaHCO3 > Na z COzt coz tH )Na t Hz0 > Hz + 2Na OL, H...

A:                       Answer Identify the types of reaction

Q: Question 21 At 100°c and 2 bar pressure, the degree of dissociation of phosgene is 6.30 x 105. Calcu...

A:

Q: Predict 1H NMR (with splitting patterns) and 13C NMR chemical shifts for the benzene Alkene derivati...

A: The answer of the following is:

Q: Nitrogen dioxide decomposes according to the reaction: 2 NO2(g)  2 NO(g) + O2(g); Kp = 4.48 x 10-13 ...

A:

Q: It takes about 3.0 minutes to cook a hard-boiled egg in Los Angeles, but at the higher altitude of D...

A:

Q: What is the cell potential for the following reaction at 25 °C? Ni(s) + Cu2+(0.010 M) – Ni2+(0.0010 ...

A: Concept : A cell is formed by combination of two half cell reactions.  Two reactions are carried out...

Q: At 100oC and 2 bar pressure, the degree of dissociation of phosgene is 6.30 x 10-5.  Calculate the e...

A:

Q: Acetal product formation requires an acid catalyst in the second step, but NOT in the first step. T...

A: We have to predict whether given Statement is true or not.  

Q: II. Directions: Using Lewis structure, show how an ionic compound is formed between each pair of ele...

A: Lewis structure or Lewis dot structure is structure: For atoms : The valence electrons of the atom i...

Q: The ΔG°rxn for the reaction: N2(g) + O2(g)  2 NO(g) is +173 kJ/mol at 25 °C.  What is the equilibri...

A:

Q: The molar conductivity at infinite dilution of hydrobromic acid, sodium acetate, & sodium bromide at...

A: Molar conductivity at infinite dilution of :  Hydrobromic acid (HBr) = 520.1 S cm2 mol-1 Sodium acet...

Q: Yana uses 16.4 liters of helium to blow up a balloon for a party. If the room is at STP, how many mo...

A: Volume of Helium = 16.4 Litres Given condition is STP :- At STP :- Temperature = 0°c = 273.15 K Pres...

Q: Molecular Formula:C,H1,0, EOU: IR (cm-1): ?? bond 2951 bond 2500 - 3460 bond, 1602 bond 1715 1H NMR ...

A:

Q: The reaction A-B is first order, and has a half-life of 375.1 s. If the concentration of A after 629...

A: t1/2 = 375.1 s t = 629.0 s [A] = 0.167 M [Ao] = (to find)

Q: (b) Na20(s) + 2HI(g)→ 2Nal(s) + H20(1) AG (Na,0(s)) =-376.56 kJ/mol AG (HI(g)) = 1.30 kJ/mol f AG (H...

A:

Q: Use the following thermochemical data to calculate AGn for the formation of HI at 25°C. H2(g) 2(g) H...

A: The data given is,  

Q: A 4.50-mol sample of HI is placed in a 1.00-L vessel at 460°C, and the reaction system is allowed to...

A: Given,  Initially moles of HI = 4.50  And volume= 1.00L  At equilibrium moles of H2 and I2 = 0.343

Q: For the reaction 2HI(g) H2(g) + 12(g), K = 0.290 at 400 R. If the initial %3D concentrations of HI, ...

A: We have to predict the nature of reaction and Correct statement.  

Q: For the gas phase isomerization of cis-cyanostyrene, cis-CGHSCH=CHCNtrans-C6H5CH=CHCN the rate const...

A: The reaction given is, Given: Plot of ln(K) v/s 1/T gives a straight line. Slope of plot = -2.32 × ...

Q: Dihedral angles of omino acid residues are one of the important conformational properties to define ...

A: Dihedral angles of amino acids

Q: Which of the following is the best option for transferring 20 mL of a solution? A Use a 5ml serologi...

A: Since you have posted multiple questions, we are entitled to answer the first only.  

Q: 7. P2S4 diphosphorus tetrasulfide valence e = REDS at each central atom = shape at each central atom...

A: Lewis dot structure of the molecule is drawn assuming that the molecule is covalent molecule. Here s...

Q: What is the appropriate size of volumetric flask to use if you want to dilute a 75.00 mL solution of...

A: The question can be solved using mole concept as:  

Q: Your lab colleague doesn’t understand why you want make a stock solution and then dilute it when you...

A:

Q: If a reaction is zero-order in a reactant, when the concentration of the reactant is decreased by a ...

A: Given that, Reaction is zero order, Then,  

Q: Question 26 Why are some metabolic reactions coupled to the hydrolysis of ATP? To bypass metabolic r...

A: The correct option is:  

Q: calculate the concentration of the unknown KMnO4 solution in ppm

A:

Q: Br 1. PPH3 2. n-butyllithium H. 3.

A: Wittig reaction is the reaction which is used to produce alkene by the help of carbonyl compound. Tr...

Q: • Part A ithium bromide and lead() acetate Express your answer as a chemical equation. Identify all ...

A:

Q: Which of the following will you use to find the Ka value for bromocresol green? Select one: a.The g...

A: the Ka value for bromocresol green, we can calculate from 

Q: Nitrogen dioxide decomposes according to the reaction: 2 NO2(9) → 2 NO(g) + 02(9); Kp = 4.48 x 10-13...

A:

Q: Consider the reaction: BaSO4    Ba2+ + SO42-; Ksp = 1.1 x 10-10 .What is ΔG° at 25 °

A: Using the relationship between Gibbs free energy and equilibrium constant,  □G° = -RT×ln(Ksp) T = 25...

Q: The skeleton of acetic acid is shown. Complete the structure by adding bonds and nonbonding electron...

A:

Q: Consider the reaction: N204(g) 2 NO2(g). What is AS° at 25 °C? AHP, kJ mol-1 AGf, kJ mol-1 NO2 33.85...

A:

Q: Answer highlighted questions please) A 50.050.0 mL solution of 0.1390.139 M KOHKOH is titrated with...

A: Volume of KOH = 50.0mL or 0.050L Molarity of KOH = 0.139M Number of moles of KOH = 0.050 × 0.139  = ...

Q: What is the purpose of the salt bridge in an electrochemical cell?     To serve as a physical boun...

A: Electrochemical cell: An electrochemical cell is a device capable of either generating electrical en...

Q: A sample of 1.00 mol of perfect gas molecules with Cp = 7/2 R is put through the following cycle: (a...

A:

Q: Use these bonds and atoms to do the following: 1. Construct a model of methane. Write down its dash ...

A: Since you have asked multiple questions, we will answer the first one for you. To get the remaining ...

Q: Choose the correct hybridization for the atom indicated in the molecule below. CH 3CH 2CH 2CH 3 sp2 ...

A:

Q: When is the fugacity equal to the partial pressure of a gas? Fugacity is equal to partial pr...

A: Fugacity  is representing the actual behavior of real gases which distinctly different from the beha...

Q: Was there any physical change in the characteristics of trichloroethane when it was added to water?

A: Trichloroethane is micible in water. When it is added to water there is no any physical change.

Q: Ammonium perchlorate (NH,CIO,) is the solid rocket fuel used by the U.S. Space Shuttle. It reacts wi...

A:

Q: The average atomic weight of copper, which has two naturally occurring isotopes, is 63.5. One of the...

A: Given, The average atomic weight of copper  is 63.5. One of the isotopes has an atomic weight of 62....

Q: In a reaction where a carboxylic ester and water react to produce an alcohol and a carboxylic acid a...

A:                           Answer  In a reaction where a carboxylic ester and water react to produce ...

Q: Please answer just the question number 2. (not 1. and 3.).

A:

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.