A student calibrated the mini-spectrophotometer with a blank solution, and then went to check their solution. They got a fingerprint on the cuvette while filling it. Because of this, the expected reading for the absorbance would be too high which would cause the calculated value of K, to be too high

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A: 2) When we are asked to measure volumes of reagents for example here we are asked to measure 20ml of...

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Q: Write the nuclear reaction of I-131 that undergo alpha, alpha, alpha, beta, positron emission, gamma

A: Final product is tin

Q: Jse the following two titration curves to answer each of the following statements. Select the choice...

A: The titrations curves given are,  

Q: AGCI(s) Ag (aq) +72.68 C1 (aq) +56.4 +96.2 S° (JK-1 mol-1) AH f(kJ/mol) Use the data given to calcul...

A:

Q: Q: Indicate the effect caused by the following situations on the value of the weight molecule of a s...

A: Weight of solute is only affected in condition when there is Loss of solute in Process.

Q: What quantity in moles of HCl are there in 87.5 mL of 0.350 M HCl?

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Q: A 450.0 ml sample of a 0.284 M solution of silver nitrate is mixed with 400.0 mL of 0.200 M calcium ...

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A: Gibbs free energy is associated with work done

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Q: The reaction AB(aq) »A(g) +B(g) is second order in AB and has a rate constant of 0.0168 L-mol .s rea...

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Q: Which of the following sets of quantum numbers is not possible? n m m, A. 4 3 -2 В. 3 С.3 +1/2 -1/2 ...

A:

Q: pH Titration Curve for titrating 29.0 ml of Aqueous Lithium hydroxide with 0.788 mol/L Hydrobromic A...

A: it's a strong base-acid titration

Q: 24) A 1.50 g sample of pure sucrose is burned in a bomb calorimeter that has a heat capacity of 8.93...

A: Mass of Sucrose (m)= 1.50 g  Heat Capacity (C) = 8.930 kJ/°C Change in temperature (∆T) = 26.77°C - ...

Q: consider the following exothermic reaction at 0.00 °C and 1.00 atm Se04 (g) Se(g) + O2 (g) , Kc = 2....

A:

Q: Consider the following reaction at 25.0 degree Celsius. 1) If the initial concentration of [Hg(OH)2]...

A: Answer: With the help of given data, first of all find out order of reaction and then using the inte...

Q: 4 6 7 8. 10 11 12 13 Complete the table below. Round each of your entries to 2 significant digits. Y...

A: Acid are those which release H+ ion and form conjugate base.  Base are those which take H+ ion and f...

Q: Determine the rate of formation of HBr considering the mechanism of chain reaction, i.e.: Propagatio...

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Q: Balance this redox reaction in a basic solution, showing the reduction and the oxidation half reacti...

A: Oxidation is the loss of electrons. Reduction is the gain of electrons.   In the oxidation, the oxid...

Q: Peak area proportional to mass or concentration of the individual components of the sample injected....

A: The area under the peak is a function of that compound's concentration in the sample.

Q: Calculate the theoretical ph of each solution a. 0.200M sodium bicarbonate (carbonic scid: pka1= 6.3...

A:  

Q: What is a buffer? How does a buffer keep pH constant?  Write the two reactions that are taking place...

A: Buffer Solutions are the solutions which resists the sharp change in pH on addition of an acid or ba...

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Q: consider the reaction: H2(g) + NO(g) arrow forward N2O(g). What is the order of reaction with respec...

A: Detail solution is given below

Q: The pH of a 0.50 M solution of an acid, HA, is 4.67. Calculate Ka of HA.

A:

Q: For a gas sample whose volume is 2.50 L at 270 K, what will be the volume at 390 K? 173 L 3.00 L 3.6...

A: According to the answering guidelines, I can only post the solution for the first question. Kindly p...

Q: Consider the following reaction at equilibrium Co(g) + H2O(g)=CO2(g) + H2(g) If CO(g) is removed, in...

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Q: NH4* ag) + NO2 (ag) [NH,*] ---> N2(8) + 2H2O). [NO2] ΕΧPT RATE 0.020 M/s. 0.030 M/s. 0.005 M/s. 1 0....

A: In the rate law, the rate of the reaction is directly proportional to the concentration of the react...

Q: Q: Indicate the effect caused by the following situations on the value of the weight molecule of a s...

A: The solute only effected when there is Loss of solute in the Experiment  

Q: Сос 1 L Concentration (mol/L) ½ L ow many moles is 130 g of COCI2? moles hat is the molarity of a so...

A: 1) mass of CoCl2 = 130g Molar mass of CoCl2 = 129.839 g/mol  

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A: When ammonia is added to the solution initially, its concentration in the mixture: [NH3]=mL of ammon...

Q: 3. In the conductometric titration, the concentration of alkali is five time stronger than the conce...

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Q: 7. To neutralize the 20 ml o.I5 N KOH solution, how much amount of o.03M H2SO4 solution will be requ...

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Q: (a)Which side for the each of the following acid-base equilibria would be primarily favored? (b)Calc...

A: Here we have to predict the acid-base reactions which are primarily equilibrium favoured and equilib...

Q: a.) C+ 2H2 = CH4 From the equations: 1. C+ 02= CO2 AH = -393.51 kJ 2. H2 + % O2 = H20 AH = -285.83 k...

A: Law of heat summation  When a reaction takes place by more than one step, the overall enthalpy of th...

Q: The acid dissociation constant K, of carbonic acid (H,CO,) is 4.5 x 10. Calculate the pH of a 4.8M s...

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Q: H3C a. H3C .CH3 CH3 b. H3C° H3C *OH с. HO HOʻ

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Q: In the laboratory you are given the task of separating Agt and Co2+ ions in aqueous solution. For ea...

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Q: The value of ΔH° for the reaction below is -482 kJ. Calculate the heat (kJ) released to the surround...

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Q: Experiment 2: Investigating the Properties of Buffer Solutions   Test Data:  pH of Cola Solution ...

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Q: A chemistry graduate student is given 100. mL of a 1.20M ammonia (NH solution. Ammonia is a weak bas...

A: 31 gm of NH4Br added to NH3 to make a buffer solution of desired pH.

Q: Determine equilibrium concentration of NOCI in the reaction given the following initial concentratio...

A: Given :  Kc  = 4.601 x 104  [NO] = 0.300 M [Cl2] = 0.500 M

Q: What is the percent by mass concentration of NaCl in a solution that is prepared by adding 15.0 g of...

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Q: 6. Which of these two compounds will have a higher melting point? Explain your choice. NaCl and NaF

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Q: What is the cobalt(II) ion concentration in a solution prepared by mixing 351 mL of 0.372 M cobalt(I...

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Q: The base protonation constånt K, of morpholine (C,H,ONH) is 2.14 x 10 . Calculate the pH of a 0.86 M...

A: Equilibrium constant is the ratio of  product of concentration of products raised to their stoichiom...

Q: Provide a synthesis pathway for ester

A: synthesis pathway for ester

Q: Aqueous hydrobromic acid (HBr) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium b...

A: Given Reaction :-  HBr (aq) + NaOH (s) ----> NaBr (aq) + H20 (aq)   7.3 g            2.2 g       ...