Consider a weak acid "HA". What is the pH of a 0.856 mol L-1 solution of HA? The KA of HA is 1.14 x 10-5

Q: A 170.00 g sample of an unidentified compound contains 29.84 g sodium, 67.49 g chromium, and 72.67 g...

A: Empirical formula: empirical formula can be defined as the simplest positive whole number ratio of a...

Q: 8. A student made a series of measurements of Mg** concentration in drinking water giving the follow...

A: Introduction :  Drinking water contains magnesium high concentration of magnesium and sulfur is harm...

Q: Fatty acids are stored in the body as triglicerides in adipose tissues. Consider the oxidation react...

A: Solution - According to the question Fatty acid - Fatty acids are the building blocks of the fat in...

Q: ollowing data. 212.9 mg of naproxen was weighed and dissolved in a mixture of 25 ml of water and 75 ...

A: Here 212.9 mg of impure naproxen sample diluted with water and methanol solvent consume 8.08 ml of 0...

Q: An oxide of chromium is found to have the following % composition: 68.4 % Cr and 31.6 % O. Determine...

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Q: What is the final temperature when 70.0 g of water at 80.0°C is mixed with 30.0 g of water at 25.0°...

A: specific heat is a function of temperature itself. But, in current problem variation of 10 degree C ...

Q: 1mol Na 36.5 g Na - 1.59 mol Na +0.79 mol →2 Na 23 g Na 1 molS |= 0.79 mol S+ 0.79 mol → 1S 32 g S 2...

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Q: NaHCO3 (aq)  +  HCl (aq) --> NaCl (aq)  +  H2O (l)  + CO2 (g) The contents of your stomach typicall...

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Q: 2. Convert 475.0 dyne/cm? to Pa.

A: Given 475.0 dyne/cm2

Q: Table 1 Vinegar Sample 1 Vinegar Sample 2 Vinegar Sample 3 Calculations for Sample 1 Mass of 5.00 g ...

A: Answer is as follows

Q: for benzene, c6h6, the freezing point constant, Kp is 5.12 K kg mol^-1 and its normal freezing point...

A: Equation for the depression in freezing point is given by,  ΔTf  = i ×  Kf  × m    i = van't hoff fa...

Q: HO + Oz ta 6. Directions: To a test tube containing 3 mL of 3% H.O; (hydrogen peroxide), add 0.1 g (...

A: The above reaction is catalytic decomposition of H2O2. 2nd Reaction is of combustion of ethanol.  

Q: 9. The Bronsted-Lowery acid in the reaction H2O + NH3 = NH4 + OH- is С. ОН D. NH4 10.In the followin...

A: Bronsted-Lowry acid is chemical species that can donate proton (H+ ion) and Bronsted-Lowry base is a...

Q: 3.1524 g HCI (FW 36.46) was diluted with 45 mL water and titrated with 1.0149 M NAOH (FW 40) using m...

A: The number of moles of a compound can be determined by the ratio between mass of the compound to its...

Q: 4. Starting from the universal gas constant (R = 0.0821 mol-K L-atm determine the volume (in L) occu...

A: Ideal gas equation: The temperature, pressure, volume, and mole of the gas are related to the ideal ...

Q: II. Rate Law The following data were collected experimentally from the following reaction. 2 NO + 2 ...

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Q: How many atomic orbitals are there in a g subshell? What is the maximum value of the secondary quan...

A: Complete solution is given below in next step

Q: second box is wrong. not sure why. so i just need the second box answer.

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Q: For the hydrogen atom, the relative probability of finding an electron at any single point in an orb...

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Q: If you make a solution that is a 0.500 M solution of ascorbic acid (H2C6H6O6, pKa1 = 4.10, pKa2 = 11...

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Q: Compare the two quantities based on the given condition: An aqueous solution of 0.10 M Al2(SO4)3 at...

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Q: chip sample) is analyzed using EDTA titration with EBT as indicator. The following data were recorde...

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Q: Which of the following compounds (attachment) may be analyzed by redox titration? он .CI но нн но, O...

A: Here from the given compounds , we have to determine which can be oxidised by redox titration. For p...

Q: List all types of bonding present in the ion SO42. 1. ionic bond II. polar covalent bond II. nonpola...

A: The (SO4)2—  molecule formed by dissociation of H2SO4 molecule. When two hydrogen atom are release f...

Q: Solid aluminum (Al)and chlorine (Cl,) gas react to form solid aluminum chloride (AICI,). Suppose you...

A: 2Al + Cl2 → 2AlCl3From the Reaction  2 moles of Al gives = 2 moles of AlCl3 ' 3 moles of Cl2  gives ...

Q: KCIO3 (s) 2 KCI (s) + 02 (g) is 2 * Combustion Reactions false True The total moles of 02 react with...

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Q: How many molecules (not moles) of NH3 are produced from 3.78×10−4 g of H2?

A: Given :  Mass of H2 = 3.78 x 10-4 gm  Molar mass of H2 = 2 gm/mole   

Q: why is boiling water not a recommended sterilization method?

A: why is boiling water not a recommended sterilization method is given below

Q: Predict the reactions when the following substances are mixed. Identify the (a) type of reaction, (b...

A: Reaction takes place between two compounds when precipitate is formed or some gas is released.

Q: Study the tabulated data during an gravimetric analysis of BaSO4 experiment Trial T1 T2 T3 Mass...

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Q: Which of the following statements is true regarding the mixing of two ideal gases at constant temper...

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Q: 8.) Calculate the ionic strength of 0.040 M NazSO4.

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Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 5....

A: Mass given 5.10 kg

Q: Calculate the freezing point of a .2m CaCl2 aqueous solution, assuming it dissociates completely to ...

A: Colligative properties: The colligative properties are those properties of solutions that depend on ...

Q: DBN CI ? Br NaSH (b) (a)

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Q: One gallon of gasoline burned in an automobile’s engine produces on the average 9.5 kg of carbon dio...

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Q: Calculate the molarity of an acetic acid (FW 60,052) solution if 25 mL of this solution is neutraliz...

A: Sodium hydroxide reacts with acetic acid, to form sodium acetate and water. The equation for the bal...

Q: A student titrates a 25.00 mL aliquot.of HCI (concentration unknown) with 33.10 mL of 0.1500 M NAOH....

A: 5) Given: Volume of HCl = 25.00 mL. Concentration of NaOH = 0.1500 M And volume of NaOH required = 3...

Q: Fill in the blank with the name of the following compounds: Al2S3 N202 Na2CO3 PCI3

A: Ionic compound: Ionic compound composed of cation which is positively charged (+charge) and an anion...

Q: 3. Among the steps for the synthesis of asymmetric 1,4-dihydropiridines, a fundamental intermediate ...

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Q: Cobalt(II) complex ion solution: [Co(H2O)6]*2(aq) + 4CI'(aq) [COC14] ?(aq) + 6H2O(I) Pink Blue (3) A...

A: The reaction given is,  

Q: Which of the following electron configurations is incorrect? A) Ca [Ar]4s? B) Mn [Ar]4s²4d° C) Cu [A...

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Q: Phosphoric acid, which is commonly used as rust inhibitor, food additive and etching agent for denta...

A: A chemical reaction can be added or subtracted like an algebraic equation.

Q: GIVEN: - 500mg of ascorbic acid - 2L of distilled water - 7.5% m/v (this is the stock solution) ...

A: Given data,Mass of ascorbic acid=500mg=0.500gVolume of water=2.0L=2000mL% m/v of solution=7.5 %

Q: 51.4 g of Y(g) (molar mass = 29.10 g/mol) is placed in a 0.688 L flask for the following reaction to...

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Q: Ammonia (NH,) gas and oxygen (0,) gas react to form nitrogen (N,) gas and water (H,O) vapor. Suppose...

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Q: 0.10 mol weak acid HCNO is dissolved in 1.00 L H2O I. α CNO- II. α HCNO   a) I > II b) I = II ...

A: Here 0.1 mole of weak acid HCNO is dissolved in 1L of water.   We have to determine the correct stat...

Q: a- Accordingly, which one of the two students got th more accurate results ? b- Mention the technica...

A: Percentage of impurities in Na2CO3 = 20 % Percentage Purity of Na2CO3 = 80 %     Mass of Na2CO3 diss...

Q: OH Calculate the percentage purity of naproxen (FW 230.26) from the following data. 210.7 mg of napr...

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Q: Match the type of titration involve Choices: A. Iodimetry B. Acidimetry C. Argentometry D. Iodo...

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