Which element is in excess?

Q: A coffee-cup calorimeter contains 50 mL of water with an initial temperature of 24.8°C 1.972 grams…

A: Given :-  Initial temperature of water = 24.8° C  Volume of water = 50 mL  Mass of metal = 1.972…

Q: HNO3 + H2O —> H3O+ + NO3 1. Which reactant loses a proton? _____________________________________ 2.…

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Q: 8.37) An electron in the first excited state of hydrogen is struck by a photon of light of…

A: Given,  Wavelength of photon = λ = 656.48 nm  a). What is the frequency of the photon ?  b). What is…

Q: Which statement is false regarding the titration of a weak base with a strong acid? B + H+ → BH+ A.…

A: In a weak base-strong acid titration, the acid and base will combine to form an acidic solution. A…

Q: A solution of CaCl, in water forms a mixture that is 29.0% calcium chloride by mass. If the total…

A: Given: Mass% of calcium chloride = 29.0% Total mass of the mixture = 319.0 g

Q: The institution decides to add dissolved Al (III) in the form of Al(OH)3 into the water for the…

A: This institute has decided to add Al as a Al(OH)3 in water treatment plant. The equilibrium is…

Q: Identify the spectator ions (if any) when aqueous solutions of the following are mixed: AGNO3 and…

A: Given-> AgNO3 + NaCl --->

Q: What is the OH⁻ concentration in this solution 1.05 M C₅H₅N?

A: Here we are required to find the concentration of hydroxide ion in 1.05M solution of pyridine

Q: 1. In this chemical equation, 2Mg(s) + O2(g) —> 2MgO(s) , what is being oxidized? 2. In this…

A: To determine which species is oxidised and which is reduced.

Q: A 1.00 M solution of fluoroacetic acid is 10.0% dissociated in water at a certain temperature. The…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Draw a plausible mechanism for the reaction shown below. Determine the major product and provide…

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Q: 5. You studied the chemical reaction, 2NO2(g) → 2NO(g) + O2(g), at 25°C by monitoring the…

A: From this plot , we would predict order of reaction and use its equation to calculate rate constant.…

Q: 5. The [H*] of a solution of 0.001000 M solution of potassium chloride is a) 1.036 x 107M b) 1x 107…

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Q: 2. Calculate reaction AH°rxn and reaction AU°rxn for the total oxidation of benzene. Use the stable…

A: The complete oxidation of benzene gives Carbon dioxide gas and liquid water as -  C6H6(l) + 7.5O2(g)…

Q: A solution is prepared at 25 °C that is initially 0.42M in ammonia (NH,), a weak base with K, = 1.8…

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Q: A 25.00 mL aliquot of 0.100 M NH3 is titrated with 21.00 mL of 0.0900 M HCI. Calculate the pH. Kb =…

A: In this question, we will determine the pH of the Buffer solution which is make by after mixing of…

Q: Which is not a property of buffers? Buffers resist changes in pH when acids or bases are added or…

A: Buffers are used to resist change in pH. We we add some amount of acid or base, pH not changes much.…

Q: Using the table of the weak base below, you have chosen Aniline as your weak base in the buffer…

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Q: (CH3)3CCI + CH3I 3 2. 1. please show all steps and arrow pushing

A: In this question, we will write the synthesis all steps with using arrow pushing and reagents also…

Q: 1. Draw the structure of (Z) N-phenyl-2-fluoro-3-iodo-2-hexenamide.

A: the alkene bond can be represent as E and Z isomer.  When both higher priority group are on same…

Q: A solution is prepared at 25 °C that is initially 0.39M in chloroacetic acid (HCH,CICO,), a weak…

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Q: 1.0 L buffer solution is 0.250 M H*C_{2}*H_{3}*O_{2} and 1.050MLi*c_{2}*H_{3}*O_{2} Which of the…

A: A buffer solution has a weak acid solution and it's conjugate base solution.

Q: 1 The sum of the ON of all atoms in a polyatomic group is equal to the group's net charge true or…

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Q: A 72.8 L constant-volume cylinder containing 7.41 g He is heated until the pressure reaches 3.50…

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Q: 1.According to the following unbalanced equation, solid lead can be reacted with Nitric acid to form…

A: Mass of nitric acid is given whereas lead is present in excess. So, nitric acid is the limiting…

Q: 5) The compound methylamine, CH3NH2, contains a C-N bond. In this bond, which of the following best…

A: The electronegativity of nitrogen is 3.00 and carbon is 2.55.

Q: Which statement is FALSE regarding the titration of a weak acid with a strong base? HA + OH" → A" +…

A: HA + OH−→ A− + H2O C. Before strong base is added, the pH is driven by the ionization of the weak…

Q: A monoprotic weak acid, HA (K, = 1.78 × 104), was titrated against NaOH. A 50.00-mL of 0.04870 M HA…

A: Given: Ka of HA = 1.78×10-4 Concentration of HA (M1) = 0.04870 Volume of HA (V1) = 50.00 mL…

Q: 3. Decrcasing the pressurc: a. 2PBS(s) + 302(9) 2 2P60(s) + 2S02(0) b. PCI5(g) 2 PC13() + Cl2(g) c.…

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Q: A coffee-cup calorimeter contains 30 mL of water with an initial temperature of 24.8°C. An unknown…

A:

Q: 1. When a mole of metal oxide decomposes, enthalpy change is positive. What de it tell you about the…

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

Q: Please show detail steps to solition

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Q: Which of the following will result in the formation of a carboxylic acid? * O All of the choices O…

A: Answer is given below

Q: B. Determination of the hydrolysis constant (or acid dissociation constant, Ka) of NH4+.

A: Given: Concentration of NH4Cl =0.01 M pH of the solution: 5.91 To determine: Hydrolysis constant of…

Q: 8. For the mass spec shown below, select the structure that matches. How can you tell? MASS SPECTRUM…

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Q: Different Beer-Lambert analyzes were given with different substances, based on the data presented,…

A: R2 represents how well regression line fits the data. Higher the R2 value lower is the standard…

Q: Given the phase diagram of CO2, identify the state at the following conditions Supercritical fluid B…

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Q: write the correct formula,state of matter, and equations, & balance:     Aqueous iron (III) nitrate…

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Q: Which are true for polarography? Polarography is amperometry conducted with a dropping Hg electrode.…

A: Option C is true Statement 4 is true as we use the dropping mercury electrode as the working…

Q: What is the OH⁻ concentration in this solution 1.05 M C₅H₅N?

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Q: Write "most" under the member of each trio which is most stable. Write "least" under the member of…

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Q: JAMES E. resonance structures and ideas of carbocation stability. Br HBr Br CH3 CH3 H3C CH3

A: The Kinetic and thermodynamic product decided by the intermediate stability. When intermediate is…

Q: preparations of two aqueous solutions are described in the table below. For each solution, write the…

A: A) if we add HBr to NH3. Acid base reaction takes place.  Acids = HBr  Base Others = Br-

Q: chemcollective.org/activities/autograded/124 (Upd NMAT Reviewers 4 NMAT Reviewers -.. Blackboard…

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Q: 1. A dust explosion occurs in a saw mill. a catalytic converter. Cataluct Concentratin 8. Calcium…

A: Those chemical compounds which are reacting together to form the new one are known as the reactants.…

Q: CN A. 4 Ph. A, 5 6

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Q: What is the freezing point of a 10% by mass solution of ethanol in water? Kf H2O = 1.86 °C/m

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Q: A 1.0-L container originally holds 0.4 moles of N2, 0.1 moles of O2, and 0.08 moles of NO. If the…

A: Given,  Volume of the solution in L = 1 L  Initial moles of N2 = 0.4 mole  Initial moles of O2 = 0.1…

Q: The equilibrium constant K-4.00 10-4 at the temperature of 500 ° C for the reaction 2HCN(g) * H2(g)…

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Q: Question 3 What variable is correlated in the titration based on Nernst equation? Potential energy…

A: Nernst Equation    Ecell = potential energy of the cell  E°cell = standard potential energy of the…

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.