A metal sample weighing 125.50 grams and at a temperature of 98.5 degrees Celsius was placed in 47.50 grams of water in a calorimeter at 22.2 degrees Celsius. At equilibrium the temperature of the water and metal was 43.1 degrees Celsius. What is the change in temperature of the metal (in degrees C)? (Report this as a positive value) Your Answer:

Q: Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs,...

A: The molar mass of Fe is 55.85 g/mol. The molar mass of Al is 26.98 g/mol. The molar mass of Fe2O3 is...

Q: What is the molar solubility of AgCl (Ksp = 1.80 × 101º) in 0.680 M NH,? (Kf of Ag(NH,),* is 1 × 107...

A: The explanation is given below-

Q: Describe the efficiency, in general, of copolymerisation and plasticisation in lowering melting poin...

A: A copolymer is also known as polymer and when two or more than two monomer combined as result produc...

Q: Give the IUPAC name for the compounds shown below. H Br

A: IUPAC name of the organic compound is composed of the following three components:Root name = depends...

Q: 8 sulmpie UI SUINU SOdlum hydroxide dissolves emperature rises from 21.6 °C to 37.8 °C. Assume that ...

A: we know q = CnaohdT + MwaterCwaterdT where q = heat , C = heat capacity , M = mass of water , dT = ...

Q: Br Br: H20 oxonium ion bromide alkyl bromide

A:

Q: The pressure 25.0 meters under water is 347 kPa. what is this pressure in mmHg?

A: Given that: Pressure = 347kPa We know that: 1atm = 760mmhg 

Q: To answer the questions, interpret the following Lewis diagram for NO,Cl. :0-N= 1. For the central n...

A: The valence electrons of nitrogen are 5. The valence electrons of oxygen are 6. The valence electron...

Q: Acetylene, C2H2 , is used in welding torches. It releases a lot of energy when burned in oxygen. The...

A: Please find your solution below :

Q: Fill in the name and empirical formula of each ionic compound that could be formed from the ions in ...

A: Empirical formula : Empirical formula is defined as the chemical formula which shows the ratio of el...

Q: The following reaction helped shape the earth's crust to form the mineral called iron(I) silicate. I...

A:

Q: tr FrO TYpe: A) 0.5 B) -0.5 D) -2.8 €) lonic f) Polar covalent 6) non Polar Coalent H) None Of thes

A: Given; molecules are FrO

Q: During product recovery and washing, sodium carbonate is required to neutralize the acid present. As...

A: The reaction between sodium carbonate and Sulfuric acid will be as follows Na2CO3+H2SO4→Na2SO4+CO2+H...

Q: Given below is a possible three-step mechanism describing the reaction of hydrogen peroxide with iod...

A: Given Step 1:  (slow)                H2O2(aq) +  I-(aq)   --->  OH-(aq)  +  HOI(aq) Step 2: (very...

Q: How many grams of NAOH will you need to add to 5.0 mL of deionized water to obtain a 3.0 M solution?...

A: Given that:  Molarity of NaOH solution = 3.0 M Volume of solution  = 5.0ml = 5.0ml×1L/1000ml = 0.005...

Q: What is the maximum amount of hydrogen iodide that can be formed? grams What is the FORMTLA for the ...

A:

Q: Select and view the the Ball and Stick model, Na* Coordination. By how many close Cl ion neighbors i...

A: Given; unit cell is Simple cubic unit cell. 

Q: a the following terms with their definitions. an element comprised of discreet molecules bonded toge...

A:

Q: 2. Given the equation S, - S, = [' aq %3D use appropriate thermodynamic equations T to show that S, ...

A: To show this formula , we would use certain thermodynamics relations and also idea gas equation.

Q: What is the charge on the anion Z in

A:

Q: How many grams of solid ammonium bromide should be added to 2.00 L of a 0.268 M ammonia solution to ...

A:

Q: calculate the volume of each product and the energy involved in the transformation for the complete ...

A:

Q: Calculate the: %m/v, %v/v, %m/m and M of a solution that contains 28.0 grams of KNO3 in 300.0 mL of ...

A: Given :-  mass of KNO3 = 28.0 g  volume of water = 300.0 mL  density of KNO3 = 2.11 g/mL  density of...

Q: The combustion of exactly 1.000 g of benzoic acid in a bomb calorimeter releases 26.38 kJ of heat. I...

A: The combustion of 1.000 g of benzoic acid release = 26.38 J of heat The amount of benzoic acid is = ...

Q: When electrons of 02 are excited in the ground state (level 0, degree of degradation g0 = 3), they b...

A: Given  Ground state = degree of degradation (g0 = 3)  Excited state =  (g1 = 1)  Wavelength = 1263 n...

Q: Show below how to calculate many mL of 3.0 M HCl are required to prepare 500. mL of 1.0 M HCl soluti...

A: Given values are, N1= 3.0 M V1=?? N2=1.0M V2= 500 mL

Q: From the Lewis structures of the species given, pick all of those in which the central atom obeys th...

A: We have to pic all of those in which the central atom obey's octet rule for the given level structur...

Q: Liquid hexane (CH3(CH2),CH;) will react with gaseous oxygen (O,) to produce gaseous carbon dioxide (...

A:

Q: What types of substances tend to be non-electrolytes?   (Select all that apply) compounds like suga...

A: Electrolytes are compound that conducts electricity in solution by dissociation into ions. 

Q: A given compound decomposes with a half-life of 8.0 s and the half-life is independent of the initia...

A: We have to calculate the time taken.  

Q: Which of the following statements are true about a first-order reaction? X. Units of the rate consta...

A: Use the concept first order reaction's chemical kinetics.

Q: A reaction has k = 8.39M1 s1. How long does it take, in seconds, for the reactant concentration to d...

A: Given :-  rate constant = 8.39 M-1.s-1  initial concentration = 0.0840 M  final concentration or con...

Q: A metal sample weighing 128.00 grams and at a temperature of 98.2 degrees Celsius was placed in 45.5...

A: Change in temperature = final temperature - initial temperature. The heat given by the metal is gain...

Q: What is the appropriate expression for the given reaction? NH4*- NH3+ H* O Ksp O Ka O Kb O Kf O Kw

A: Option 2  is the correct choice.  Ka is because NH4+ is the conjugate acid of NH3 base. 

Q: which of the following froactions is equivalent to 55%   13/25,  11/20/,  9/20,  12/25

A: Given,  13/25,  11/20,  9/20,   12/25

Q: ALL ABOUT BUFFERS 1. All of the following combinations are not buffer solution, EXCEPT:   a HI an...

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

Q: H- O-N NO: H. H, He 100 MH2 COSY 1,3-dinitsobenzene. At the left. hand edge aud at the top is the ID...

A: The structure of the unknown molecule can be readily obtained by using spectroscopy-based methods. T...

Q: Two closes vessel A and B contains air and is connected together by a valve. Vessel A has a volume o...

A: Vessel A Volume VA = 90 L Pressure PA= 3500 kPa  = 35.5423 atm                            ( 1kPa = 0...

Q: Draw the starting structure that would 3. lead to this polpmer under radical conditions

A: Given ; condition is radical

Q: A neutral atom has the following electron configuration= 3 1s 2s 2p What is the chemical symbol for ...

A: the electron configuration is the distribution of electrons of an atom or molecule in atomic or mole...

Q: Potassium metal reacts with oxygen gas to produce potassium oxide when heated with in air. A chemist...

A:

Q: Give the mechanism (arrow-pushing) for the reaction below. NAOME/MEOH \Br b. Name the product of the...

A: The mechanism is provided below:

Q: Choose all reagent(s) that would lead to the product formation from the shown reaction. OH O H;SO4 B...

A: The possible reaction with given reagents are shown below-    Out of all the options only H2SO4 can ...

Q: 1. Boiling point of n-butyl alcohol 2. Boiling point of n-butyl acetate 3. Refractive index of n-b...

A: Boiling point of a substance is defined as the temperature at which it's vapour pressure becomes equ...

Q: Consider an atom in which the single electron is replaced by a negatively charged muon (m_μ = 207m_e...

A:

Q: Arrange the following compounds from highest Rț to lowest Rç on a TLC plate after elution with 50% e...

A: The given compounds are A = Ketone  B= Carboxylic acid  C=Ether. We need to predict the polarity nat...

Q: When a 4.25 g sample of solid ammonium nitrate dissolves in 60.0g of water in a calorimeter, the tem...

A: Mass of NH4NO3 = 4.25 g Number of moles of NH4NO3 = mass/mol.wt. = 4.25 g/(80.04 g/mol) = 0.053098 m...

Q: A buffer solution contains 0.340 M ammonium chloride and 0.203 M ammonia. If 0.0488 moles of sodium ...

A: To calculate the pH of the buffer solution after adding NaOH solution , we would first calculate the...

Q: Aluminum hydroxide will form a complex when hydroxide ions are added to the solution. a. Write the c...

A:

Q: Consider the titration of 100.0 mL of 0.200 Macetic acid (Ka = 1.8 × 10-5) by 0.100 MKOH. Calculate ...

A: