A coffee-cup calorimeter contains 70 mL of water with an initial temperature of 24.9°C. An unknown sample with a mass of 6.259 grams was placed inside making the water temperature rise up to 25.5°C. The initial temperature of the metal was 86.4°C.  (Water: density = 1g/mL; specific heat = 4.184 J/g-°C). 1. How much heat (in Joules) was absorbed by the water in the calorimeter?_________ (Write your answer in 2 decimal places without the unit). 2. What is the specific heat (J/g-°C) of the unknown sample?___________ (Write your answer in 2 decimal places without the unit). 3. Based on the table of specific heat, what is the identity of the sample in the previous problem? (Write your answer in CAPITAL LETTERS). (PHOTOGRAPH

Q: Exercises: Solve the following problems. Show a complete solution. 1. Determine the % w/w of a…

A: How much sugar should be added in 2000 mL water to have 30% (w/v) sugar solution?

Q: 4. Name the following compounds by IUPAC system. a. CH3(CH3):C2HS b. CHs(CH2)2 CH3 c.…

A: While naming an organic compound we need to first identify the longest carbon chain ( parent chain).…

Q: - (a) . Draw and discuss the current VS. potential relationship for the reduction of metal ion in…

A:

Q: A cylinder of oxygen gas contains 91.3 g O, (32 g/mol). If the volume of the cylinder is 4.58 L,…

A:

Q: Which of the following sample could be analyzed using an acidic titrant? Section а. Citric acid in…

A: The sample which is analyzed using acidic titrant should be Basic in nature .

Q: How many milliliters of a 0.200 M sodium hydroxide solution are needed to react with 18.0 mL of a…

A:

Q: 8. Name each of the following amides: || a) CH3-ċ-Ņ- H II C-NH-CH,-CH3 b) c) CH3-CH,-CH,-CH,-C-ŅH

A:

Q: What is the change in the boiling point of a solution made by dissolving 14.7 g of C6H1206 into…

A: The mass of C6H12O6 dissolved in 150.0 mL of water = 14.7 g The density of water = 1.00 g/mL Kb for…

Q: In this reaction, 2-butanol reacts with acetic acid to produce 2-butylacetate. Acetic acid is used…

A: Mass = Density * Volume   No of moles = Mass / Molar Mass

Q: A raw type of ink that disappears is based on the following endothermic balance: Colorless Blue…

A: The given reaction is endothermic i.e., heat is required for the reaction to proceed.

Q: Draw a plausible mechanism for the reaction shown below. Provide explanations for each step in the…

A:

Q: Calculate the value of E°cell for a galvanic cell based on the following half reactions.  Be sure to…

A: Eocell can be calculated using formula : Eocell  = Eo ( cathode ) - Eo ( anode )

Q: A bicycle tire has a pressure of 5 2 7.00 x10 N/m at a temperature of 18.0°C and contains 2.00 L of…

A: The expression of the ideal gas law is, PV = NKT Here, P is the absolute pressure of a gas, V is the…

Q: Write an expression that gives the equilibrium concentration of H,O in

A:

Q: D H. I. OH -Br DMSO H3C CH3 HOCH,CH,CH, H3C 'CH3 II.

A:

Q: ography - fa) Define polarography. Br efly explain different types of mass transport process and the…

A: The method of Polarography is used extensively to determine thr trace metals in the pharmaceutical…

Q: Use the ideal gas law to complete the table: V. P 2.32 atm 1.11 L 206 K 516 torr 0.738 mol 295 K…

A: Ideal gases can be defined as the gases that obey ideal gas laws such as Boyle's Law, Charle's law,…

Q: Suppose that ammonia, applied to a field as a fertilizer, is washed into a farm pond containing 3.0…

A:

Q: Alkene reactant Products Name of the product (CH,),C=CHCH,CH,CH, + HCI CH CH, + H,0 4SO.. CH OH +…

A: Since, this is a multiple subparts questions. So, I will solved in details first three subparts for…

Q: hich of the following is an example of an endothermic process?

A: Exothermic reaction are those in which energy is released and endothermic reaction are those in…

Q: 15) How many mL 0.138 M H3PO4 solution is needed to titrate 126 mL of 0.263 M KOH solution? H:PO(aq)…

A:

Q: What is the estimated pH of a solution of CH₃COONa, formed by mixing CH₃COOH and NaOH?

A: Give data  CH₃COONa, formed by mixing CH₃COOH and NaOH    Find PH of solution

Q: 11. Consider the following reaction and its AG-AG• at 25.00 °C. 2Ag(aq)+Cu(s) 2Ag(s)+Cu*(aq) AG…

A: For given reaction and given ∆G° value , E°cell and K can be calculated using relations with ∆G° .

Q: Explain each step. Give the ionization reaction and the simple cleavage reactions to form a…

A:

Q: Which le the best synthesia of cyclopentyl ethyl other? a) • CH-CH-OH H. heat ONa H* b) + CH2-CH2 H,…

A:

Q: Write the condensed formula of the following alkanes neohexane 3,3,5-trimethyl-4-n-propylnonane

A: Hi! Thank you for the question As per the honor code, We’ll answer the first question since the…

Q: Does this make sense considering the value of K. 7. If the equilibrium constant for the following…

A:

Q: A laboratory technician is preparing a stock solution of KOH for use in some General Chemistry lab…

A: Given; mass of NaOH = 143.4gm So, Moles of NaOH = mass/molar mass molar mass of NaOH =  39.99gm/mol…

Q: Ketones are less reactive than aldehydes. It is due to A. Alkyl groups are electron donating B.…

A: Organic compounds can be defined as the compounds that contain carbon and hydrogen atoms in a…

Q: 10. Describe how you are going to make 2.00 L of 0.40 M of NaCI.

A: (10)

Q: Similar to teams of ballplayers, elements have symbols (abbreviations or logos) and are arranged in…

A: Element name Element symbol Group number Period number  Chlorine Cl 7 3 Calcium Ca 2 4 Radium…

Q: Balance the equation equalizing both atoms of the equation N2 + Cl2 --->

A: Balanced chemical equation can be defined as the equation in which number of atoms of every element…

Q: Consider a sample of argon gas at 20.0ºC, 2167 mm Hg, and 1,450 mL. How many moles of argon are in…

A: Given, Pressure of argon gas (P) = 2167 mmHg = 2.85 atm Volume of argon gas (V) = 1,450 mL = 1.45 L…

Q: 6. Show ALL products that you would expect from the reaction of l-methyleyclopentene with NBS? Show…

A:

Q: Check the box next to each molecule on the right that has the shape of the model molecule on the…

A: Shape is determined on the basis of electron and molecular geometry of molecule.

Q: 60. Silicon has three naturally occurring isotopes (Si-28, Si-29, and Si-30). The mass and natural…

A: For isotopes , total abundance of all isotope in total is 100% . So we can use given abundance of…

Q: The experiment required 3 drops of concentrated sulfuric acid. Why was this acid added? Would the…

A:

Q: What is the H₃O⁺ concentration in this solution 0.50 M HCHO₂?

A:

Q: Please answer 7-9 with solutions

A: Hi! Thank you for the question As per the honor code, We’ll answer the first question since the…

Q: Curriculum Expectation F2. investigate oxidation-reduction reactions using a galvanic cell, and…

A: Oxidation number is defined as charge on central metal ion. Oxidation number is calculated as…

Q: Oralife® is a white ointment containing Peppermint Oil BP 5.3 mg/g, Wool Fat BP 53 mg/g, and…

A: The 'weight by weight' or w/w is a concentration term that indicates the amount of solute present in…

Q: Find the ΔH for the reaction below, given the following reactions and subsequent ΔH values: C3H8(g)…

A: Using Hess's law,  Enthalpy of reaction remains constant whether it completes in single step or more…

Q: Which of the following is not used as a primary standard to standardize acidic titrants? Section а.…

A: Primary standard are those compounds which are sufficiently pure such that their solution can be…

Q: A small amount of acetonitrile (CH3CN) is dissolved in a large amount of water. Imagine separating…

A: 1) The order of increasing enthalpy is as follows :     D < A <  B < C 2) Energy is…

Q: How did you get 2.69 x 10-12 ? When I did the caculation I got -5.16 x 10-22

A:

Q: Chemistry The following information is given for mercury at 1 atm: T - 356.60°C T--39.00°C Specific…

A: Given,  The mass of Mercury = 41.20 g.  The heat required to change the temperature of Mercury from…

Q: Glycolysis is a breaking down process in which is converted to sugars. lactose chlorinated…

A:

Q: What mass of water is produced from the complete combustion of 3.20×10−3 gg of methane? Express your…

A: We have to calculate the amount of water is produced from the complete combustion of 3.20×10−3 g of…

Q: 0.2 mL of 0.10M NaOH is needed to titrate an unknown acid with a volume of 10.15mL. The final…

A: Given that -  Molarity of NaOH = 0.10 M  Volume of NaOH = 0.2 mL  Volume of unknown acid = 10.15 mL…

Q: 2. Explain the application of Wolff-Kishner reduction reaction in synthesis of diclofenac sodium.

A: Please find the below attachments. If it is help for you please rate.   Thank you