Two solutions, 250.0 mL of 1.00 M CaCl2(aq) and 250.0 mL of 1.00 M K2SO4(aq), are combined, and the temperature decreased by 2.40 degrees C. Determine qrxn per mole of CaSO4(s) formed in the reaction. A) +12.0 kJ/mol B) -12.0 kJ/mol C) +6.00 kJ/mol D) -6.00 kJ/mol
Q: In cation exchange chromatography,
A: Any positively charged ions that come into contact with the resin will be exchanged with other…
Q: Use the concept of Hess' Law to determine AH for the process 2X+Z given the following numbered…
A: Hess's law describes the net change in enthalpy for a reaction as calculated from the sub-reactions.…
Q: Calculate the Keq (report up to two decimal places and do not use scientific notation) for the net…
A: The energetically unfavorable reactions having a positive delta G value is made possible ein the…
Q: long will the reaction take if you were to increase the temperature to 30 °C
A:
Q: Quinoline is isolated from a reaction mixture by the process of steam distillation. A mixture of…
A: The numerical is based on Raoult's Law Relative lowering of vapour pressure = mole fraction of…
Q: How many g of NaCl are in 2.5L of D50WNSS?
A: Drug calculation is an essential part of medication administration among nurses .As Nurses, we need…
Q: Potassium superoxide, KO2, is used in rebreathing masks to generate oxygen according to the reaction…
A: A chemical reaction is a process by which a bunch of molecules called the reactants are converted…
Q: If the enthalpy of standard formation enthalpies of CO and CO, are-110 kJ mol and -393.5 kJ mol,…
A: the enthalpy is the sum, of the total internal energy and product of pressure and volume and the…
Q: 1. What is a “dNTP” and why are they included in the reaction mixture? 2. What will be the final…
A: dNTP is the acronym used for deoxynucleoside triphosphate. dNTPs are most commonly used in the…
Q: Which of the following statements is CORRECT regarding the following intermediate? H2N H NH2
A: "Since you have asked multiple questions, we will solve the first question for you. If you want a…
Q: Enzyme A, B, and C having the following properties are to be separated by various chromatography at…
A: The chromatographic process is generally helping a solvent that destroys an adsorbed substance from…
Q: What are the possible sources of error when experimenting with sodium bicarbonate and hydrochloric…
A: Sodium bicarbonate : Sodium bicarbonate is a salt that breaks down to form sodium and bicarbonate in…
Q: Calculate ΔG for the reaction H2O(l) ⇆ H+(aq) + OH−(aq) at 25°C for the following conditions.…
A: H2O(l) ⇆ H+(aq) + OH−(aq) ΔG=ΔG0+RTlnK Here, K= ratio of concentrations of the products (K2)divided…
Q: On the basis of the appearance of this plate, what are you testing for? Describe the reactions at A,…
A: The disc diffusion methodology (DDM) is an agar diffusion method (ADM) because the plant extract to…
Q: What is the total entropy change if a 0.310 efficiency engine takes 3.96E3 J of heat from a 304 degC…
A: Given the δQH of energy flow into the system the system's entropy changes by: dSsys=δQH/Tsys
Q: Use the following thermodynamic information to calculate ASen for the combustion of rxn acetylene,…
A: Introduction Using the formula ΔS°rxn = ∑S°(products) −∑S°(reactants) ∑S°(products)= (2 x S° of CO2+…
Q: For a Michaelis Menten reaction the following rate constants were observed: k1 =7x 10/M-sec k1=1x…
A: The correct answer is option, d. 0.0003M.
Q: Biven that the reaction takes place with 100% yield, how many mi of acetic anhydride is seeded for…
A: Limiting reagent is the substances that limits the production, Here the salicyclic acid limiting…
Q: In the electrolysis of aqueous sodium bromide, there are two possible anodic reactions: *2H2O(l)…
A: Water is reduced at the cathode in the electrolysis of NaBr. This occurs because water is more…
Q: Po-210 is an alpha emitter with a half-life of 138 days. Howmany grams of Po-210 remain after 552…
A: Given Values: t1/2 = 138 days t = 552 days No = 5.80 g Nt = ??
Q: For the following reaction 3 experiments have been run and the data collected is in the following…
A: a)
Q: A 0.578-g saltwater sample was titrated with 1.864 g AgNO3 solution to reach the endpoint of the…
A: AgNO3 and saltwater titration Weight of AgNO3 = 5g In 100 ml water solution is made. 1.864 g AgNO3…
Q: explain bohr shift?
A: Hemoglobin is a tetrameric protein that transports oxygen in the blood. The affinity of Hb for…
Q: How many moles of Na2S2O3 would be required to react completely with 0.450 g of AgBr?
A: As it is given, Na2S2O3 is reacted with the AgBr, the balanced reaction is shown below: 2Na2S2O3 +…
Q: Complete the following precipitation reactions using balanced chemical equations:
A: The reaction in which the formation of insoluble salt when two soluble salts mix together in the…
Q: Given the balanced equation, Na2SO4(aq) + BaCl2(aq) → 2 NaCl(aq) + BaSO4(s), how many moles of BaCl2…
A: Balanced equation: Na2SO4+ BaCl2------> 2NaCl + BaSO4
Q: At what pressure in atm does ethane (C₂H₆) have a density of 37.2 g/L at 75.0 °C?
A: The pressure of the ethane gas can be calculated by the ideal gas equation. PV = nRT Number of moles…
Q: A +B C+D 1) Calculate AG for the above reac un and indicáte whether the reaction is favorable or…
A: Gibb's free energy∆G: It determines whether the given reaction will be Spontaneous or…
Q: Consider the following reaction at 25°C with the ΔG°’ = +1800 J/mol for the forward reaction. The…
A: Given Values: ∆G° = 1800 J/mol[A] = 16 mM[B] = 13 mMR = 8.315 J/mol-KT = 25+273 = 298 K
Q: The colour change for the test reaction of an alkene with KMNO4 is from: A. Purple to black/brown O…
A: Potassium permanganate is an inorganic compound and is of purple colour due to permanganate ion. It…
Q: Calculate the equilibrium constant (K'eq) for each of the three reactions at pH 7.0 and 25 °C, using…
A:
Q: The formation constants at 25°C for Fe(CN)4-6 and Fe(EDTA)2– are 1.00 x 1037 and 2.10 x 1014,…
A: Gibbs free energy is the amount of energy that is used to calculate the work done by a system under…
Q: Consider the fully developed flow of Citric acid (50% aqueous solution) at 50 °C through a…
A: Viscosity is defined as the resistance of one layer of a fluid to shearing by another. It is usually…
Q: What is the theoretical yield of hydrochloric acid ? grams What is the percent yield of…
A: Actual yield :- Amount of product produced actually after the reaction is complete. Theoretical…
Q: According to this standard curve for chlorophyll dissolved in ethanol, what is the concentration of…
A: the concentration of betacyanin = 3 micromolar
Q: When the following equation of a redox reaction in acidic solution is properly balanced, what are…
A: First Step: split the equation into two half-reactions(ignore hydrogen or oxygen) Cr2O72-→ Cr3+…
Q: (a) (' . Hill plots. Label the axes and indicate on both the plot above and the Hill plot where the…
A: We know that nitrous oxide are anesthetic gas that are used during surgery and are non volatile in…
Q: Describe the Bohr effect.
A: According to Bohr Effect the affinity of hemoglobin for dioxygen decreases with decrease in pH
Q: How many kilojoules are released by the combustion of 17.0 g of C8H18?
A: Carbon is the key element fount in all organic molecules. carbon have 4 valency. Based on the carbon…
Q: How is Kw defined, and what is its numerical value at 25 °C (298 K)?
A: As we know that the pure water is a considered as weak electrolyte that is H2O ⇔H++ OH-
Q: In Lieberman's Test, what should you do to revert the change caused by the addition of water to the…
A: Liebermann's test is a confirmatory test for the detection of a phenol group. It is also employed in…
Q: A reaction at 23°C has ∆G = 1 kJ mol–¹. Why might this reaction become spontaneous at 37°C?
A: A reaction at 23 degree celecius has 1 KJ mol-1 This would make the G value negative and hence the…
Q: The vapor pressure of component Cis 272 torr, and that of component E is 176 torr a vith x 0.200 has…
A: All the values are given in the question so just put the values in required formula
Q: The amount of heat in kJ required to convert 0.7 gal of liquid water to steam equal… ?
A: 0.7 gallon of water 1 gallon = 3.7854 kg water 0.7 gallon = 2.65 kg water
Q: For the same chromatographic column and experimental conditions Rs when H = 3 cm = Rs when H = 5 cm…
A: Asked : For same chromatographic column and experiment conditions the answer out of given options is…
Two solutions, 250.0 mL of 1.00 M CaCl2(aq) and 250.0 mL of 1.00 M K2SO4(aq), are combined, and the temperature decreased by 2.40 degrees C. Determine qrxn per mole of CaSO4(s) formed in the reaction.
A) +12.0 kJ/mol
B) -12.0 kJ/mol
C) +6.00 kJ/mol
D) -6.00 kJ/mol
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Consider the titration of 50.00 mL of 0.160 M NH3 with 0.200 M HCl. Calculate the pH at the following volumes of the titrant: VT = 0.00 (Initial Stage) VT = 20.00 VT = 30.00 VT = 40.00 (Equivalence Point Stage) VT = 45.00 Kb = 1.76 x 10-5Consider the following reaction at 25°C with the ΔG°’ = +1800 J/mol for the forward reaction.The molar concentrations at the beginning of the reaction were [A] = 19 mM and [B] = 10 mM.After 1 hour, the concentrations were [A] = 16 mM and [B] = 13 mM. Calculate the ΔG of the reaction at the 1 hour timepoint. Please round to 1 decimal point.Gas constant = 8.315 J/mol KUsing the formula V₁D₁ = V₂D2, what volume of a 1/100 (10-2) dilution would you need to produce 100 mL of a 1/10000 (10-4) dilution? (Note: provide your answer in decimal format to three decimal places.)
- Quinoline is isolated from a reaction mixture by the process of steam distillation. A mixture of quinoline and water distils at a total pressure of 740 mm Hg at 98.96°C. The vapour pressure of water (Po) is 732.04 mm Hg at this temperature. What is the maximum number of grams of quinoline which can be distilled with a 1000g of watervapour under a pressure of 740 mm Hg.A 0.578-g saltwater sample was titrated with 1.864 g AgNO3 solution to reach the endpoint of the reaction. Calculate the following by showing all necessary solutions: 1. mol AGNO3 if the AGNO3 solution was prepared by dissolving 5.0 g of AgNO3 in distilled water until 100 ml is reached. (MW AgNO3 = 169.87 g/mol) 2. % Cl in the saltwater sample (MM CI = 35.45 g Cl /mol CI" )The formation constants at 25°C for Fe(CN)4-6 and Fe(EDTA)2– are 1.00 x 1037 and 2.10 x 1014, respectively. Answer the questions below. 1) Calculate K under standard conditions for the reaction Fe(EDTA)2−(aq) + 6CN−(aq) ----> Fe(CN)4−6(aq) + EDTA4−(aq) 2) Calculate ΔG° for the reaction. (kJ/mol)
- In vitro experiments are conducted at pH = 7.4 to simulate physiological conditions. A phosphate buffer system is often used. H₂PO → H₂PO¹²¯ +H+ pK₁ = 7.2 a. What must be the ratio of the concentrations of HPO to H₂POд ions? b. What mass of NaH2PO4 must be added to 500.0 mL of 0.10 M Na₂HPO4 (aq) in the preparation of the buffered solution?In 2011, researchers showed that hypochlorous acid (HClO) generated by white blood cells kills bacteria. Calculate the percent dissociation of (a) 0.40 M HClO; (b) 0.035 M HClO (Ka = 2.9x10-8).The value of AH° for HBr(g) was first evaluated using the following standard enthalpy values obtained experimentally. Use these data to calculate the value of AHf° for HBr(g). Cl,(g)+2KB1(ag) – Br, (ag)+2KCI(ag) AH° =-96.2 kJ H,(g)+Cl, (g)- HCl(aq)+ KOH(aq) KC(aq)+H,O(!) 2HCI(g) AH° =-184 kJ AH° =-57.3 kJ HBr(aq)+ KOH(aq) KBr(aq)+ H,O(!) AH° =-57.3 kJ AH° =-77.0 kJ HC(g) Br,(g) HBr(g)- HCl(aq) disdlving in water Br, (aq) AH° =-4.2 kJ disolving in water HBr(aq) AH° =-79.9 kJ dissolving in water ΔΗΡ- i kJ
- The equation of the double reciprocal plot is y = 0.5294 x + 1.4960. What is the value of vmax (in M/s)? The substrate concentration is given in units of molarity (M) and reaction velocity has units of molarity per second (M/s). (Report to three significant figures)It takes 175ml of 0.75 M H2SO4 to completely neutralize 285 ml of NaOH. What is the concentration of the NaOH solution?For the following reaction, 4.91 grams of water are mixed with excess chlorine gas. The reaction yields 12.5 grams of hydrochloric acid.chlorine (g) + water (l) hydrochloric acid (aq) + chloric acid (HClO3) (aq) What is the theoretical yield of hydrochloric acid ? grams What is the percent yield of hydrochloric acid ? %