How much heat evolves from burning 16.4 g of sulfur, Sg, in air? g S8(s) + 8 O2(g) → 8 SO2(g) AH°r= -2.39 x 103 kJ rxn

Q: Calculate (1) the weight of air removed

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Q: 8. Is the following statement True or False: A dry cell has no water in it.

A: A standard dry cell battery consists of a zinc anode , a carbon cathode within a central rod

Q: Chemical nomenclature is the language of chemistry. Writing formulas for Tonic compounds using the…

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Q: A gaseous mixture contain 32.9 mol % He, 40.7 mol % N2 and 26.4 mol % Determine the composition of…

A: Given : We have to calculate the composition of mixture on mass basis.

Q: 11.8) The most intense absorption band in the visible spectrum of [Mn(H2O)6]?+ is at 24,900 cm1 and…

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Q: How is the pH scale of acidity/basicity described?     It's a vector function of the [H+]. It's a…

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Q: Why is the nucleophilic attack on halonium and mercurinium ions "SN2-like" and not simply SN2? Weak…

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Q: What is the molarity of 30g of table salt in 120ml of water. Density of table salt is 2.17 g/ml.

A: Molarity is the amount of moles of any substance present per liter volume.  Molarity = moles of…

Q: A chemist wishing to do an experiment requiring 4' Cat (half-life = 4.5 days) needs 5.0 µg of the…

A: Given :  Half life (t1/2) = 4.5 days  Mass of 47Ca+2 required = 5.0 ug  Time for delivery = 96 hour…

Q: A solution has a concentration of 10^-4 x 1.54 with respect to X and has a permeability of 0.0874…

A: A question based on absorption that is to be accomplished.

Q: Calculate the De Broglie wavelength of a 1.50 ton ca x a speed of 12.0 m/s. h = 6.626 × 1034 J· sec,…

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Q: Table 3 Molecules with Multiple Central Atoms Molecule C2H4 H2O2 CH3OH CH3NH2 Number of Bond…

A: There are different type of Molecules with different atoms and different properties.  (1) C2H4 ,…

Q: REAGENT AMOUNTS In this section, you must record the actual amounts and volumes of reagens use in…

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Q: Balance the equation: H2O[aq] + Ca(NO3)2[s] + (NH4)2HPO4[s] + NH3[aq] -> Ca10(PO4)6(OH)2[s] +…

A: 2H2O + 10Ca(NO3)2 + 6(NH4)2HPO4 + 8NH3 → Ca10(PO4)6(OH)2 + 20NH4NO3

Q: a. Are there any examples in which an ionic solid contains covalent bonds?

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Q: Draw the structure of a wax formed from stearic acid [CH3(CH2)16COOH] and the alcohol

A: Carboxylic acid reacts with alcohol in the presence of acid or base catalyst to form an ester. The…

Q: How can you find the moles and the KSP of the of acid and base of a titration experiment from the…

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Q: Compared with a solution that has a pH of 6.0, a solution that has a pH of 3.0 contains a) twice as…

A: Given-> pH of solution -1 = 6.0 pH of solution -2 = 3.0

Q: Draw the major product of this Claisen condensation reaction. Ignore inorganic byproducts. t(s). If…

A: Claisen condensation - reaction that occurs between two esters or one ester and another carbonyl…

Q: alculate the weight of propane in a 5-liter steel cylinder at 125 °C and 100 atm pressure using the…

A: Given : We have to calculate the weight of propane gas.

Q: At what temperature will molecules of oxygen have the same root-mean-square velocity as molecules of…

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Q: Which one of the following forms of radiation has th highest energy? A A = 395 nm B A = 5.70 × 107 m…

A: When a radiation occurs then it is associated to a certain amount of energy.Here different values of…

Q: What amino acid sequence does the following MRNA nucleotide sequence specify? 5' – AUGGCCAGCUGU – 3'…

A: Amino acid codon are translated with the help of codon table.

Q: Draw the structure of Fe(OX).2H20.

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Write the pressure equilibrium constant expression for this reaction. Ti(s)+2 Cl,(g)→TICL,(1)

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Q: 3‑Methylbutanal undergoes an aldol reaction to form 3‑hydroxy‑2‑isopropyl‑5‑methylhexanal. Complete…

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Q: Sulfur dioxide has an enthalpy of vaporization of 24.9 kJ/mol. At 205 K, SO2 has a vapor pressure of…

A: The normal boiling point temperature of SO2 can be calculated as follows

Q: A student determined that it took 5.65 mL of NBS to reach an endpoint with a standard solution that…

A: To calculate Concentration of vitamin C in orange juice sample , we can use relation  M1 / V1 = M2 /…

Q: A chemical species that loses electrons in a redox reaction is ______________.    a) oxidized b)…

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Q: Compute the standard entropy change for the following reaction: 3N2H4(I) + 403(g) → 6NO(g) + 6H20(1)…

A: Calculate the entropy change of the given reaction---

Q: 10. Which of the following solutions is most basic? a) [H,O'] = 2x10' b) [H,O'] = 9x10? c) [H,O'] =…

A: ->Concentration of H3O+ is proportional to acidity. -> Hence, concentration of H3O+ is…

Q: What would 0.03 bq of Cs be equivalent to? What i mean by this is, how much is that when compared to…

A: Given :0.03 bq of Cs  We have to determine:  What would 0.03 bq of Cs be equivalent to i) in terms…

Q: The AHvap of a certain compound is 17.58 kJ - mol and its ASan is 75.86 J. mol-. K-. What is the…

A: Given-> ∆Hvap = 17.58 kj/mole = 17580 KJ/mole (1Kj = 1000J) ∆Svap= 75.86 J.mole-1.K-1

Q: the reaction C2H4 + 3O2 ---> 2CO2 + 2H2O, does this mean that ten (10) grams of CO2 produced reuired…

A: C2H4 + 3O2 ----> 2CO2 + 2H2O Mass of  CO2  = 10 g Number of moles of CO2= 10g ÷ 44g/mol = 0.227…

Q: Sort the following according to whether they are monosaccharides, disaccharides, or polysaccharides.…

A: Here, we have to classify the given carbohydrates as monosaccharides, disaccharides, and…

Q: When a 4.4 g metal ball at 15 °C is placed in 15 g water at 75 °C the final temperature is 74 °C.…

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Q: Which symbols would correctly complete this nuclear equation? C→'4N + ? Check all that apply. View…

A: Choose the correct symbol ---

Q: 31n 15 undo 32 H → P+? 15 Express your answer as a particle. ΑΣφ ? OA chemical reaction does not…

A: Identify ? mark of the given reaction ?

Q: Cobalt-60 is radioactive and has a half life of 5.26 years. How long would it take a sample to decay…

A: We have to calculate the time taken.

Q: What types of covalent bonds are necessary for an intermolecular hydrogen bond to form?

A: Hydrogen bonding are not a permanent bond, its form due to electrostatic attraction between two…

Q: 4) Predict whether the compound is "aromatic", "anti-aromatic" or "non-aromatic" from a list of…

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Q: How do you calculate the concentration of a solution in units of molarity? a Divide the number of…

A: We have to choose the correct option. Units of molarity?

Q: Draw a structural diagram for Co(NH3)§CI**. What is the nature of the bonds between Co and NH3?…

A: [Co(NH3)5Cl]2+ is an example of coordination compound with cobalt(III) as the central ion and NH3…

Q: How many moles are in 6.90 g of SO,? Express your answer to three significant figures. VO AE moles…

A: Given, mass of SO3 = 6.90 g moles are in 6.90 g of SO3 = ? Note: molar mass of SO3 = (32 + 3×16)…

Q: Calculate ∆H for the reaction CH4(g) + ½ O2(g) → CO(g) + 2 H2(g) given the following data:…

A: Given Equation-- CH4+1/2O2->CO + 2H2

Q: 6.3. Calculate the higher and lower heating values of methyl alcohol, CH3OH, by using the following…

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Q: What is the concentration of hydroxide ions in the Solution formed when 4.00 g of Mg(s) react with…

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Q: In the Vitamin C analysis, you determined Vitamin C content in a tablet using redox titration…

A: Vitamin C contains ascorbic acid and this acid is a diprotic acid while KClO3 is monobasic base. So…

Q: Identify which of the compounds below will behave as a Brønsted-Lowry acid or base when dissolved in…

A: Bronsted-Lowry acid-base theory: The Bronsted-Lowry acid-base theory states that the acid is a…

Q: do the Fuctions go through 7) (R)2-bromopentane reacts With CH3 OH at raom temperature 2)…

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Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.