Determine the mass percent composition of a solution made by dissolving 21.1 g of KF in 415 g of H₂O. % KF

Q: Calculate the change in entropy of the system for the following process: 10.0g of ice at -10.0°C is…

A: 10.0 g of ice at - 10.0 °C is converted into water vapor at 115 °C at 1 bar pressure .We have to…

Q: A 86 g of Nitrogen (N2) takes up 56L of container volume. Keeping the pressure constant, the amount…

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Q: P4(s)+5O2(g)⟶P4O10(s)                                ΔG°=−2697.0 kJ/mol 2H2(g)+O2(g)⟶2H2O(g)…

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Q: The average molecular speed in a sample of CH4 gas at a certain temperature is 694 m/s. The average…

A: We know average velocity of a gas at absolute temperature T isVavg=8RTπMwhere M is molecular mass…

Q: Determine at what temperature will the reaction become nonspontaneous

A: The relationship between ∆G° , ∆H° and ∆S° is  ∆G° = ∆H° - T∆S°  If ∆G° < 0 , the reaction is…

Q: Place the steps in order from first to last for confirming the presence of lead(II) ions in a…

A: Answer: This question is based on qualitative analysis of basic radicals where we are analyzing the…

Q: If magnesium carbonate is combined with 100.0 mL of 0.50 mol/L hydrochloric acid solution, determine…

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Q: 1. Which of the following represent impossible combinations of n and l?  (a) 1p, (b) 4s, (c) 5f,…

A: Since you asked for multiple question and no one specified that which is solve. So only solve first…

Q: Label each pair of stereoisomers below as: a. enantiomers b. diastereomers C. identical Place the…

A: Molecules that are non-superimposable mirror images of each other are called enantiomers.  Molecules…

Q: Cuantos Carbonos quirales contiene la siguiente molecula? 0 1 2 Nie

A: Since, Chiral molecule are those whose all four group or atoms  are different and that atom which is…

Q: Identify the MAJOR product that would be obtained at the end of the following 3- step reaction…

A: -> NaNH2 is base which can abstract most acidic hydrogen and form nucleophile. -> Na/NH3 is…

Q: Write the balanced molecular and ionic chemical equations for the three reactions (two precipitation…

A: Out of the three test tubes, we have put Pb(NO3)2(aq) or Pb2+(aq) in the first two test tubes, and…

Q: Using the Suppose a current of 0.510 A flows through a copper wire for 13.0 minutes. Calculate how…

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Q: Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen…

A: The enthalpy change is a state function and the Hess law states that the change of enthalpy in a…

Q: Which element would have the least favorable favorable (least negative) electron affinity?  S, Si,…

A: Given : 1) elements Tip : electron affinity increases left to right and decreases top to bottom on…

Q: Determine whether each of the molecules below is polar or nonpolar.

A: Given : formula of compounds Tip : first draw the shape

Q: Classify each of the following N₂ FeCl3 as ionic (I), nonpolar (N), or polar (P): CF4 SO4²- ▬▬

A: Since, If net change in dipole moment is non-zero then molecule is polar otherwise non-polar. Ionic…

Q: If 4.94 A is applied for 93 minutes, what mass of Cr(s) will be produced? g Cr

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Q: A 2.56 gram sample of an unknown gas is found to occupy a volume of 1.64 L at a pressure of 958 mmHg…

A: The molar mass of a gas can be calculated by using the ideal gas equation: The temperature,…

Q: 2 3 a te the Molar Mass? (phenylpropiolic acid) (2)-cis-Camphenic acid [(±)- cis-camphenecamphoric…

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Q: What mass of precipitate (in g) is formed when 79.1 mL of 0.500 M FeCl reacts with excess AgNO, in…

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Q: For the last one, why did you put 0.00025 mole/ 0.00005mole? Isnt the Ti+ at 0.0003?

A: From the redox reaction : Ti+3+ Sn+2→Ti+1+Sn+4 Calculate the required moles of Ti+3 by using…

Q: Ho!!!!!! NH₂ H₂N "!!!|| OH ОН

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Q: Show calculations for x and y: (Include appropriate units, attach a separate sheet if necessary) y =…

A: Rate = k [I-]x [H2O2]y k: Rate Constant x,y: Order

Q: Tetrachloromethane(CC14)is accidentally spilled on a bench in the laboratory. Describe a safety…

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Q: Which element would have the lowest ionization energy?       S, Ge, Al, Ca, Rb   2.) Which…

A: Given : 1) elements  Tip : ionization energy decreases on moving top to bottom and ionization energy…

Q: H. Calculate how to make 125 uL of a 0.4 mg/mL solution if you have a stock of 1 mg/mL. Show all…

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Q: Write the mechanism for the alkylation reaction of acetylide anion with bromoethane to give…

A: Due to the presence of negative charge in the acetylide anion (H-C≡C-), it is a strong nucleophile…

Q: In each group below, which has the least polar bonds? SiCl4, PCI3, SC1₂ NCI3, PCI3, AsCl3

A: Given : formula of compounds Tip : less difference of electronegativity between atoms will have…

Q: 12- Kp 6.2x10 for the following reaction: 2H₂S (g) 2H₂(g) + S₂ (g) Calculate the mole fraction of S2…

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Q: If 10.0 moles of O₂ are reacted with excess NO in the reaction below, and only 6.2 mol of NO were…

A: The given problem is based on the stoichiometric calculations of the chemical reactions.

Q: Given the following rate law, what is the order of the reaction?     a. zeroth b. second c. third

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Q: What will the result be if temporary hard water is added to soap solution and was shaken vigorously?

A: Temporary hardness of water due to Magnesium and Calcium.

Q: How much heat (kJ) is required to take a 14 g sample of solid ethanol (C₂H, OH) from -175 °C to a…

A: Answer: Heat will be absorbed by ethanol in 3 steps: 1. Increase in temperature of solid ethanol 2.…

Q: Given that water boils at 100 °C and has a heat of vaporization of 40.65 kJ/mol, what is the boiling…

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Q: X AX Inglés The madnesium ion needs stearate ions to produce an insoluble stearate ion: 1 two 3 Tr…

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Q: Part A What will be the equilibrium concentration of CO? Express the concentration in molarity to…

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Q: ow much work in kJ is done when an 144.75 L piston is compressed to 61.6 L against an external…

A: Given : V1 = 144.75 L , V2 = 61.6 L            Pext = 2.36 atm  Tip : Work done = - Pext × ∆V

Q: calculated

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Q: From the values of ΔH and ΔS predict which of the following reactions would be spontaneous at 25°C.…

A: A reaction is said to be spontaneous if it is product favored .

Q: Redraw this molecule so that all chirality centers are in the S configuration: Stee ОН ОН О OH

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Q: One last thing I didn't realize,  C) Calculate the pH at the equivalence point using your answer…

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Q: need help with number 2!

A: #2: Mass of the metal chloride sample, MxCly taken for analysis = 0.323 g  Mass of AgCl(s)…

Q: Aspirin (MM = 180.2) is prepared from the reaction of salicylic acid (MM = 138.1) and acetic…

A: First we would calculate the moles of both reactants and using the mole ratio, we would calculate…

Q: Correctly name the compounds or write the formulas. Identify each compound as molecular,…

A: Answer:- This question is answered by using the simple concept of naming the inorganic compounds…

Q: VI. a) b) Using acetylene and any alkyl halides as starting materials, synthesize the following…

A: Here we have to synthesize the following given compounds  from starting material  acetylene  and…

Q: Q1) Plot the on y-axis and time on x-axis. conductance

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: .i) Circle which of the following is the most efficient synthesis of 1-butene:

A: Given : structure of reactants

Q: Which of the following reactions will result in a decrease in entropy?

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Q: QUESTION 3 A student cleans their round bottom flask and rinses it with acetone, but fails to dry it…

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.