250 200 150 100 B 50 20 40 60 80 100 120 140 160 Time (min) The diagram aboveis the cooling curve of a certain chemical. What is its melting point? 125 °C 50 °C 75 °C 0°C Temperature (Celsius)

Q: Balanced Equation: Oxidized: Reduced: 6) H:O: + 10 I+ O: (acidic solution)

A: we need to balance the given redox reactions

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

A:

Q: Determine the oxidation state of the transition metal in each of these coordination compounds.…

A: Oxidation state of metal ion is defined the total number of electrons that an atom either gains or…

Q: alculate the amount of antimony in the sample and its percentage in the ore. mass of antimony:…

A:

Q: A phase diagram for CO, is shown below. At room temperature and very high pressure (>1500 atm), CO,…

A: (A) SOLID .

Q: A piece of magnesium metal with a mass of 10.5 g was placed into 200 mL of a dilute hydrochloric…

A: The expansion work done can be calculated using the formula,  W = - P*∆V = - P*(Vf - Vi). Since…

Q: Label the acid, base, conjugate acid, and conjugate base in these acid-base equilibria: a. H;CN + HF…

A: Concept:  Conjugate Acid and conjugate base: An acid and a base which differ only by the presence or…

Q: ertain zinc-copper cell, + Cu²^(aq) → Zn²“(aq) + Cu(s) n concentrations are (Cu2*] = 0.0346 M an is…

A: From the cell potential data E°zn = -0.76 V E°Cu = 0.34 V E°cell = E°c - E°a     = 0.34 - (-076) =…

Q: Consider the electrolysis of zinc(II) bromide. Determine the product at the cathode and the product…

A: * Electrolysis is process  of deposition of metal by     passing electrolysis . * cathode is…

Q: A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas…

A: Given data :

Q: Given below are condensed structural formulas derived from the same molecular formula (C,H14).…

A: Structural isomers are compounds which have same molecular formula but different chain arrangement (…

Q: Question 12 Which of the following has the lowest rate of reaction? O H2SO 4(aq) + BaSO 4(aq) 2H200…

A:

Q: 6. An example of the type of cell described in question 5 can be represented as Mg(s) Mg (0.025 M)…

A: Given-> Mg(s)/Mg2+(0.025M)//Mg2+(1.5 M)/Mg(s)

Q: For many purposes we can treat ammonia (NH,) as an ideal gas at temperatures above its boiling point…

A: Condition given: The pressure of 72.0 g of ammonia gas at 3.00 °C is doubled.

Q: REDOX REACTIONS: Work neatly to balance these equations using the half-reaction method.  P4 --->…

A: Balance these equations using the half-reaction method.

Q: A certain weak acid, HA, with a Ka value of 5.61 x 10-6 is titrated with NaOH.

A:

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 4.10 billion years old by…

A: Concept:  Radioactive decay: It is the process by which an unstable atomic nucleus loses energy by…

Q: Given below is the Haworth structure of a stereoisomer of maltose. Which of the following names…

A: Maltose: Maltose is a disaccharide made up of two alpha D glucose in which C1 of first glucose unit…

Q: Given the following data, 2+ 2H9²*(aq) + 2e¯→ Hg,“(aq) E = 0.92 V 2+ Hg,"(aq) + 2e→ 2Hg(1) E = 0.85…

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Q: If the solubility of silver in solution of AgCl is 0.000013 molar. The solubility product of AgCl…

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Q: /hich of the 4 vibrational modes of carbon dioxide are IR active? Explain! b) c) d)

A: IR spectroscopy in mainly used for the identification of the functional group present in the…

Q: Calculate the lattice enthalpy of MgBr2 given the following data below: Enthalpy of sublimation of…

A:

Q: A 65.0-mL sample of 0.00200 M AgNO3 is added to 65.0 mL of 0.0100 M NAIO3. What is the equilibrium…

A: AgIO3 is a sparingly soluble salt , when it is dissolved in water equilibrium is formed  AgIO3…

Q: X Achieve > Students: Register X Assessment - Chem 101 002X…

A:

Q: For the reaction 2 A+ 4 B-2C+4 D, what is the absolute magnitude of the rate of change for [B] when…

A:

Q: I Penodic Table 100. mL of 0.200 M HCI is titrated with 0.250 M NaOH. Part A What is the pH of the…

A: pH :-  The negative logarithm to the base 10 of hydrogen ion concentration expressed in mol/L of a…

Q: Holand Morris Calorimetry Lab: Exchanging Energy Background: When 2 materials (at different…

A: The kinetic energy of the atoms in hot bodies is higher than that of the atoms in cold bodies. To…

Q: Use the following equations to calculate the heat of the reaction for the synthesis of diborane.…

A: Calculate ∆Ho for the following reaction:2B(s) + 3H2(g) → B2H6(g)

Q: What is the oxidized product of the following alcohol oxidization reaction? If no reaction, select…

A:

Q: HCI is slightly soluble in water O True O False Systematic Errors: have a definite value, an…

A: HCl is a strong electrolyte and it is very soluble in water. so the given statement is false.

Q: Enter electrons as e. Use smallest possible integer coefficients for ALL reactions. If a box is not…

A:

Q: The standard electrode potential for the reduction of Ni²+ to Ni is – 0.25 V. Would the potential of…

A:

Q: 1. ElNH 2. ACONH 'N' Et None of these EtO2C. CO2Et N. Et N. .Co,E! MacBook Pro

A: Note : Hantzsch Dihydropyridine synthesis : Condensation of aldehyde and two equivalents of β keto…

Q: Iron(III) oxide and hydrogen react to form iron and water, like this: Fe,O,(s)+3H,(0)-2Fe(s)+3H,0(9)…

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Q: Draw the cis isomer of the square planar NiBr, (CO), complex. ?

A:

Q: What is the standard free energy change for the reaction below?  2 H 2O( l) → 2 H 2( g) + O 2( g)…

A:

Q: Part B The titration of 0.5538 g of KHP required 25.89 mL of an NaOH solution to reach the…

A: KHP is actually Potassium hydrogen phthalate which is a monoprotic acidic salt compound. It reacts…

Q: .c. The relative deviation (d,) of a measurement or experimental data is the deviation divided by…

A: #(c): The values obtained for percent copper(% Cu) are: 17.34%, 17.33%, 17.28%, 17.29%, 17.36%. The…

Q: If the readings are 2 3 4 the average deviation is--- O 5.33 3.34 2.44 O 0.66

A:

Q: Assuming you have 120 g of CH3OH and 84 g of O2 how many grams of CO2 would you produce?

A: Number of moles is calculated by dividing the given mass with molecular mass.

Q: 9. Synthesize the following compound using a Michael Addition.

A: Concept:  Cross clasien condensation reaction: this reaction involves the enolate of one keton…

Q: The equilbrium constant, K, for the fellowing reaction is 1.20x10 at 50K An equlibrium misture of…

A: The equilibrium reaction given is PCl5 (g) ⇌ PCl3 (g) + Cl2 (g) The equilibrium constant (K) for the…

Q: Consider the voltaic cell H+(aq, ?? M)|H2(g, 1 atm)||Cu(s)|Cu2+(aq. 0.1 M). The measured Ecell for…

A: Given that, the voltaic cell H+(aq, ?? M)|H2(g, 1 atm)||Cu(s)|Cu2+(aq. 0.1 M).  So, [Cu2+] = 0.1 M,…

Q: Design three different synthesis routes to make 3-octanol, with each one including a carbon-carbon…

A: a. Reaction between acid chloride and Gilman reagent give 3-octanone. 3-octanone is reduced to…

Q: What mass of precipitate (in g) is formed when 20.5 mL of 0.300 M Ni(NO₃)₂ reacts with 23.5 mL of…

A:

Q: Common Name: 4-Methyl-benzophenone 'H NMR IUPAC Name: 4-Methyl-benzophenone Zoom Out CAS No.:…

A: The correct answer is given below

Q: 5. Which of the following compounds would react the slowest with NaOCH2CH3 in CH3CH2OH. Br Br Br Br…

A: ->In presence of base reaction proceeds through Elimination reaction base can abstract beta…

Q: Some hikers were climbing Mount McKinley and pitched camp part way up. While boiling eggs in water…

A:

Q: A 7.00 L tank at 28.5 °C is filled with 10.9 g of boron trifluoride gas and 7.45 g of sulfur…

A: Given-> Volume (V) = 7.00 L T = 28.5°C = 28.5 + 273 = 301.5K Weight of BF3 = 10.9 gm Weight of…

Q: For a 7.48 gram sample of water at 0.63°C , what is the minimum amount of heat (in kJ) needed to…

A:

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.