Calculate the percent ionization of an acid if the [HA]initial = 0.4 M and at equilibrium the pH of the solution equals 3. 12% 0.25% 0.50% 13%

Q: Convert 339 J to its value in kilojoules. Express your answer to three significant figures and…

A: Given, Convert 339 J to its value in kilojoules: Note: 1000 J = 1 kJ

Q: A compound has a molar mass of 123.22 g/mol. What is the molecular formula of a substance that has…

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Q: Pipets used for transfer of samples of solutions are always rinsed with a small portion of the…

A: The percent error in an experiment is obtained by calculating the ratio of total error divided by…

Q: Draw the molecular ion (M+) for this molecule formed in the mass spectrometer. Br: - e 4

A: In the mass spectrometry, the given compound, 2-bromopentane losses an electron from Br atom and…

Q: 21. How many total atoms are present in 1.60 mol of sulfur dioxide? A) 9.63 X 1023 B) 1.54 X 1023 C)…

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Also, Number of atoms…

Q: 17. As shown below, the amino acid histidine can exist in 4 different protonation states depending…

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Q: The boiling point of pure ethanol (C₂H5OH, MM = 46.07 g/mol) is 78.4 °C. A solution is made using…

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Q: Chlorine OR Bromine OR Neither

A: Mass spectroscopy is an analytical technique used to measure mass to charge ratio of molecules…

Q: 3. One mole of liquid water at 100 °C is heated until the liquid is converted entirely to vapor at…

A: Given One mole of liquid water at 100 °C is heated until the liquid is converted entirely to vapor…

Q: 7) Using the ranking from above, explain using the respective compounds conjugate base to explain…

A: This question is based on Bronsted - Lowry conjugate acid base theory.

Q: Determine the number of atoms of O in 57.7 moles of Al₂(CO₃)₃.

A: Given number of moles of Al2(CO3)3 = 57.7 mole  Number of oxygen atom =?

Q: Ferrous sulfate (molar mass 152 g/mol) is a medicine used to treat anaemia. On heating it decomposes…

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Q: You have a sample of 121.5 g of C₂H6. How many moles of C₂H6 are in the sample?

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Q: A student found an object to weigh 163.46g. The “true” weight was known to be 163.24g. Calculate the…

A: Percentage error is used to measure the accuracy of any measurement. The formula for percentage…

Q: The following information is given for mercury, Hg, at latm: AHvap(357 °C) = 59.3 kJ/moi boiling…

A: Answer: This question is based on the phase transition where gaseous mercury is being condensed into…

Q: energy. Rank the following compounds from greatest lattice energy to least lattice NaCl, CaCl2, CaO,…

A: Lattice energy is the energy released when an ionic solid is formed from ions in the gas phase. It…

Q: steps ??? steps ??? steps ??? _NH2 NO2 SO3H

A: Note: According to our guidelines we are supposed to answer only first three subpart. Kindly repost…

Q: Assign the absolute configuration of the stereogenic centers in the following molecule. a b C d…

A: To determine the absolute configuration first convert Newman projection to flying wedge.

Q: D. Give the quantum numbers for the last electron of each element given in Part II following the…

A: Quantum numbers are the set of numbers used to express the location and energy of an electron in an…

Q: Find the energies (E+) and forms of the o orbitals (4) in the HCI molecule using ß=-1.0 eV and S=0.…

A: Bonding molecular orbitals are formed by the combination of two atomic orbitals to produce a lower…

Q: Calculate the amount of solid in grams you would need to measure to prepare 50.0 mL of 0.100M sodium…

A: The molarity of the sodium acetate is = 0.100 M The volume of the solution is = 50.0 mL The mass of…

Q: An ethylene glycol solution contains 28.2 gg of ethylene glycol (C2H6O2)(C2H6O2) in 92.8 mLmL of…

A: Answer: When a non-volatile solute is added in a solvent, it causes a depression in freezing point…

Q: Draw a reasonable mechanism for this reaction: O: H Но O -H -ÖH -H -ÖH :O: H+ H HÖ- H -он -H -ӧн…

A: The 5th hydroxy group attacks the carbonyl group of the given fisher projection and followed by…

Q: Q/ If the intensity of the transmitted ray is equal to 0.12 of the intensity of the incident ray on…

A: Given that -  Intensity of transmitted ray  = 0.12  Thickness = 2 cm  Molar absorbance coefficient =…

Q: A race car has a maximum speed of 0.104 km/s. What is this speed in miles per hour ?

A: The maximum speed of the car is = 0.104 km/s The speed of the car in mile/h is =?

Q: Read the descriptions of physical or chemical changes in the table below. Then decide whether the…

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Q: In the chemical engineering lab last week, the complete decomposition of 435.8 g of ammonium…

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Q: O + NaH DMF > OH D

A: When an alcohol reacts with haloalkane in presence of a base then ether is formed

Q: what if you dilute 500mL of NaCl with 500mL of pure water? What is the concentration of the new…

A: Solution consists of solute as well as solvent. If comparison is being done between two solution and…

Q: Which one is correct: a) If the enthalpy of combustion is reported as positive, it always means…

A: Enthalpy is a thermodynamic quantity that measures the total energy of a system, including both…

Q: Model 4: Molecules Containing Nitrogen Nitrogen is the only common organic element that makes an odd…

A: Given Different organic molecules

Q: Name each of the following NO₂ A OH

A: For naming following steps are required First of all identify the longest carbon chain containing…

Q: 10. Provide a stepwise synthesis for the following, starting from methylcyclohexane.

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Q: The rate constant for AB is 1.70 x 10-2 L mol-1 s-1 at 24 °C and 2.01 x 10-2 L mol-1 s-1 at 37 °C.…

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Q: What is the mole fraction, X, of solute and the molality, m (or b), for an aqueous solution that is…

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Q: 2) One of the rules in determining molecular formulas from mass spectroscopy is the nitrogen rule.…

A: 2) The molecular formula is an expression that defines the number of atoms of each element in one…

Q: c) d) 6. b) a) Which is likely to be on top, the aqueous or the organic layer*? "hint: which is more…

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Q: alcohol. A carbocation intermediate is central to which of these reaction types? (circle) E1 E2…

A: In bimolecular reactions the attack of nucleophiles (in case of SN2) or base (in case of E2) and…

Q: Q = mcAt water (c = 4.18 J/gC) A2B(s) has a molar mass of 37.5 g/mole A water based solution of 750…

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Q: Please answer the following study questions, thanks! a) Explain what makes a molecule organic. How…

A: We will discuss above question one by one.

Q: Calculate the exact alkalinity (mg/L as CaCO3) of a water containing 120 mg/L of bicarbonate ion and…

A: According to the question, The concentration of bicarbonate ion = 120 mg/L The concentration of the…

Q: The decomposition of a generic diatomic element in its standard state is represented by the equation…

A: According to the question, The standard Gibbs free energy is given by = ∆G° = 5.09 kJ/mol The…

Q: 9.19 (a) Calculate Ax Apx for a particle in a linear box for n = 1, 2, and 3 using the equation in…

A: We have find out the answer.

Q: Estimate the mixing ratio of NO in the following condition: NOx = 30 ppb, 03 100 ppb, [M] = 2.5×1019…

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Q: 4) 5) Br tBuOK CH₂OH love ONa H₂C

A: Elimination reaction, any of a class of organic chemical reactions in which a pair of atoms or…

Q: 3. What is the composition of a methanol (CH3OH) - propanol (C3H-OH) solution that has a vapor…

A: The composition of a methanol-propanol solution can be determined by using the Raoult's law, which…

Q: 1. True or false. a. Barium forms constant charge cations of 3+ charge. b. Cut and Cu²+ are…

A: Given   Ba ions , CO etc.

Q: Can you help me the model of the atom with draw a carbon atom? Also you help me with draw an energy…

A: A question based on model of atom. A specific question about model of Carbon atom is to be…

Q: ng 339 millalers of a solution of acid and water. If 16.2% of the solution is acid, how many…

A: Given: Volume of solution = 339 ml acid is 16.2 % of the total volume of solution To determine:…

Q: The solubilities of three salts in water are shown in the graph. For each salt, determine how much…

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