How much energy is needed to raise the temperature of a 65.3 g block of unknown metal from 11.5oC to 44.4oC? The heat capacity of an unknown metal is 0.03 J/goC. Round all answers to the hundredths place.

Q: Which of the following aqueous solutions are good buffer systems? 0.30 M ammonia + 0.34 M potassium ...

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Q: The following results of alkalinity determination for 100 ml sample titrated with 0.02N H,SO4. (Answ...

A: The alkalinity of a water sample is defined as the measure of the amount of OH-, HCO3-, and CO32- pr...

Q: In a calorimeter, 250 mL of 0.50 mol/L ammonium sulphate is mixed with 200 mL of 0.500 mol/L potassi...

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Q: What is the amount of the product that you can obtain in a reaction when stoichiometry is used to ca...

A: -> In reaction the amount of product obtained actually is called Actual yield. ->But the amoun...

Q: Determine the pH of a solution that is 0.50 M in Ch3COOH and 0.75M in NaCH3COO Ka for CH3COOH = 1.8...

A: Given:- Determine the pH of a solution that is 0.50 M in Ch3COOH and 0.75M in NaCH3COO Ka for CH3COO...

Q: 5. Write the dissociation equations for each of the following. Determine the Ka for the cation and t...

A: The salt of an acid and base dissociates in water into its respective cation and anion. In the given...

Q: 28) Provide the major product of the reaction shown below. CH,N2 COH

A: CH2N2 It has a role as an alkylating agent, an antineoplastic agent, a carcinogenic agent and a pois...

Q: The standard cell potential, E°, of a reaction is found to be 0.11 V. For this reaction, the value o...

A: Given- E°cell=-0.11volt

Q: Interpret IR data

A: A question based on IR spectra that is to be accomplished.

Q: Determine the Ph of a 0.020 M solution of oxalic acid, H2C2O4. What is the concentration of C2O4 ion...

A: Oxalic acid is diprotic acid and Ka1 = 6.5 * 10-2 and Ka2 = 6.1 * 10-5 [Oxalic acid] = 0.020 M      ...

Q: Show the mechanism in propagation step of monobromination for Compound X below. Compound X

A: Halogenation of alkane: Alkanes can be halogenated in the presence of light or heat. The alkane does...

Q: Draw the major product of this aminolysis reaction. Ignore inorganic byproducts. 1. (CH3)2CuLi (exce...

A: ->(CH3)2CuLi is nucleophile which give nucleophilic addition reaction.  

Q: Iodine can be in the form of I3 and I-2.  Why are these forms used in the titration of vitamin C?

A: Please find your solution below : Vitamin C also known as ascorbic acid is a water soluble vitamin. ...

Q: Why can a Pb sample accommodate more Sn atoms in its microstructure compared to how many atoms of Pb...

A: Lead (Pb) has an atomic number of 82 and a high density. Its crystal structure is face-centered cubi...

Q: Shown in the image is a diagram for the voltaic cell with the overall cell reaction being Al + Pb2+ ...

A: In the given cell Al electrode is anode because oxidation of Al is taking place while Pb electrode i...

Q: Be sure to answer all parts. Draw a stepwise mechanism for the following reaction: HO H2SO4 Part 1 o...

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Q: What would you expect to be the effect of an increase of pressure on the following reaction?  H2(g)...

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Q: 2. Substances A,B,C,D, and E are mixed together. Substances B and E form into a separate immiscible ...

A: Given that, substances A,B,C,D, and E are mixed together. Substances B and E form into a separate im...

Q: Q2. A. Compound Which is composed of 57.14% C, 6.16 % H, 9.52% N, 27.18% O by mass and has a molar m...

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Q: Part B Give a name to match the structure for the following compound: CH3 CH2CH2CH2OH. Spell out the...

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Q: Identify the most polar part(s) of the molecule?

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Q: A buffer system with pKa of 6.4. Which of the following pH is reasonable when a base is added to the...

A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The buffe...

Q: What is the density (in g/mL) of an object if 7.237 mL has a mass of 5.443 grams?

A: Given data : Mass (m) = 5.443 g Volume (v) = 7.237 mL

Q: The gas phase decomposition of sulfuryl chloride at 600 K so2Cl2(g) SO2(g) + Cl2(g) is first order i...

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Q: Using the table for lonic Radii for Several Cations and Anions c. Cell edge length of ferrous oxide ...

A: Given, Ferrous oxide has rock salt structure . density of ferrous oxide =5.75gcm3

Q: Question 36 Which of the following elements is formed when chromium is added to helium? O iron O arg...

A: The atomic number of Chromium = 24 The atomic mass of Chromium = 52 The atomic number of helium = 2 ...

Q: Based on the table, what is the outcome and the type of ion for Bismuth? Name Tendency Outcome Type ...

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Q: In the table, rank each substance by its boiling point (1 being the lowest, 4 being the highest) and...

A: Given to us vapour pressure Vs temperature graph.  Boiling point is the temperature at which vapour ...

Q: The density of 85% phosphoric acid is 1.70 g/ cm. VWhat is the volume of a solution that contains 17...

A: Given, density of phosphoric acid solution  = 1.70gcm3 strength of phosphoric acid = 85% (here assum...

Q: 50%. For the Lewis electron dot formula for the compound between magnesium and nitrogen, magnesium ...

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Q: 10 gram of which substance contain the greatest number of Hydrogen Atoms? A. 10 grams of CH4 B. 10...

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Q: 2. The reaction 2 NCI3 (g) → N2 (g) + 3 Cl2 (g) is found to follow second-order kinetics with rate c...

A: Given, Rate constant (k) = 1.23 × 10-2 M-1s-1 Time (t) = 335 sec 2NCl3(g) ---------> N2(g) + 3Cl2...

Q: Question 2: What happens to the spectrum on the screen when the blue filter is placed in the light p...

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: 19) What is the final product of the following Hofmann degradation reaction? What is the structure a...

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Q: Q3. A sample consisting of mono atomic ideal gas at 1 atm and 25C' expand adiabatically and reversib...

A: Given that, a sample consisting of a monoatomic ideal gas at 1 atm and 25oC expands adiabatically an...

Q: 1. Suppose you have a solution of 25.0 ml pure water. You add add three drops of 1.0 M HCI to the pu...

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Q: following the data in the mass spectrum, can you help me find the parent peak? and how do you identi...

A: A mass spectrum is given. We have to determine the parent peak in the given mass spectra. There are ...

Q: A reaction profile (not to scale!) for the reaction H2 + I22 HI is shown below: E (kJ) 171 H2 + 12 1...

A: The progress of a reaction can be represented by the reaction coordinate diagram. In a reaction coor...

Q: Why do we use distilled water and not tap water for boiling point elevation experiment?

A: Boiling point elevation occurs when there are dissolved minerals in the water.Distilled water usuall...

Q: A student was studying the pH differences in Erie Lake streams. The student measure a pH of 6 in str...

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Q: Hydrogen sulfide dissociates according to the following equation: 2H S(g) 2H (g) + S (g)  In a mixtu...

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Q: AG° = %3D

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Q: How much heat must be added to a 35-g sample of beryllium to increase its temperature by 250.0°C? Th...

A: Dear student since it is a multiple type questions all questions are different so according to guide...

Q: If you have 13.5g of Cl2 and dissolve in 1.5 L. of cyclohexane what is molality of solution, density...

A: Molality of solution is defined as the number of moles of solute present in 1 kg of solvent.  Number...

Q: Question 9 If the amount of NaOH used in the titration against HCI was 27.50 ml, what is the concent...

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Q: QUESTION 2 If 2.0088 moles of Silver nitrate (aq) reacts with excess strontium chloride (aq), how ma...

A: Here, we have to calculate the number of moles of precipitate (solid) that will be formed when 2.008...

Q: Determine the degrees of freedom at each indicated point on the phase diagram. (b) Temperature Press...

A: A question based on phase diagram that is to be accomplished.

Q: the concentrations of all substances present in the equilibrium mixture, if 2.35 mol of H2 and 2.35 ...

A: Given- Moles of H2 =2.35mol Moles of I2=2.35 mole  Volume= 10 .0L Moles of HI= 3.76 mol         

Q: O Naphthalene (128.164 g/mol) H. H. H. O Acetic acid (59.04 g/mol) H-C-C HICI

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Q: 05: A kerosene sample has boiling range of 180-225°C and specific gravity of 0.793. This product has...

A: Flash  point is the most minimal temperature at which a compound can disintegrate to shape an ignita...