A sample of hydrogen gas is kept in a container with a piston. Recall that 1 L atm = 101.3 J. If the gas expands from 1.0 L to 4.5 L at constant standard temperature, calculate the work done in Joules (J) if the gas expands:   Against a vacuum

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Q: _e ΔΗ fc

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Q: The temperature in Minnesota was -8 one day . On the same day . The temperature was 12 higher in Ind...

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Q: What is the K, reaction of HCN? K, reaction: The K, of HCN is 6.2 x 10-10. What is the K, value for ...

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Q: Which of the following reactions is likely to have the most negative change in entropy? a. NH3(g) ...

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Q: A gas storage cylinder in an ordinary chemical laboratory measures 7.7 cm wide and 31. cm high. This...

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Q: 20 g of Na2SO4 is dissolved in 60 g in water. What is the %w/w,

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Q: If you will measure 90µl of liquid, what pipet calibration should you use appropriately?  10 ul - 1...

A: A pipette is laboratory glassware used for the accurate measurement of the volume of a liquid.

Q: Photosynthesis in plants converts carbon dioxide and water into glucose (C,H1206) and oxygen accordi...

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Q: Identify the electron pair geometry of carbonyl chloride (COCl2)

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Q: Two students determine the percentage of lead in a sample as a laboratory exercise. The true percent...

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Q: MODIFIED TRUE OR FALSE Write the correct word to make the statement true if it's false 1. The format...

A: Correct statement 1) the formation of black smoke upon combustion of hydrocarbons indicates incomple...

Q: Complete the following chemical equation below. Provide the reagent that will separate cach pair of ...

A: Reagent for separation: Potassium chromate 

Q: The Ka of hypobromous acid, HOBr, is 2.6 x 10-9. Calculate the pH of a solu tion which is composed o...

A: PH of acidic buffer can be calculated as follows

Q: Propylamıne, Cs H, NH2, is a weak base. A 0.87 M aqueous solution of propylamine has a pH of 12.20. ...

A: a) Given, Propylamine (C3H7NH2) is a weak base. Concentration of Propylamine solution (C) = 0.87 M p...

Q: Which of the following reactions have the same Ke and Kp at a particulartemperature? () Multiple ans...

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Q: Barium chloride and sodium hydroxide Write the general, complete ionic, and net ionic equations Writ...

A: The net ionic equation can be defined as the equation that represents only those ions and compounds ...

Q: . A radioactive parent isotope with 600 atoms. After the decay, 450 daughter atoms were produced. Ca...

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Q: 2. Draw the structure of the disaccharide a -glycosyl(1-6)-galactose in the B anomeric form and circ...

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Q: Suppose we have a significant amount of a 0.445 M stock solution of H2SO4. If we wanted to make 1.50...

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Q: Consider a hypothetical C ion. How many unpaired electrons would there be in the Lewis Dot Structure...

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Q: 3Cl2 + 2N2N2 → 2N2Cl3N2Cl3 Molar masses: chlorine gas = 70.9 g/mol nitrogen gas = 28.02 g/mol dini...

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Q: Draw a structural formula for the major organic product of the reaction shown. CH3CH2 H. C=C HBr H. ...

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Q: Calculate the pH of a 0.506 M solution of NaF. The K, for the weak acid HF is 6.8 × 10-4. pH =

A: The PH of NaF can be calculated as follows

Q: Calculate the pH of a 0.13 M solution of propanoic acid. K, of propanoic acid is 1.3 x 10-5.

A: pH is defined as negative logarithm of hydrogen ion concentration.

Q: 1.Can you name the conjugate acid of each? 2. Explain what happened with the picture.

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Q: what is Spectroscopy? describe and explain it's purpose

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Q: The reaction: C2H5Cl(g)---->C2H4(g)+HCl(g) is the first order in C2H5Cl.The rate constant is 1.60 x ...

A: First-order reaction: The rate of the first-order reaction depends only on one reactant.

Q: Suppose a 500. mL flask is filled with 2.0 mol of NO, and 1.3 mol of NO. The following reaction beco...

A: Given reaction: NO3(g) + NO(g) ⇌ 2NO2(g) The initial moles of NO3 = 2.0 mol The initial moles of NO ...

Q: Consider the reaction at a particular temperature: H20(g) + CO(g) = H2(g) + CO2(g) Kp = 1.42 Determi...

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Q: What is the concentration of a solution of Ca(OH)2 for which the pH is 11.68?

A: Hydrogen ion concentration is an important parameter of an aqueous solution. The concentration of th...

Q: 1. You will be using a 0.1 M solution of sodium hydroxide (NaOH) in this experiment. Calculate how m...

A: Given :-  Molarity of NaOH stock solution = M1 = 1.25 M  Molarity of NaOH dilute solution = M2 = 0.1...

Q: following compound is oxidized? H. HO H HI H H. C H. C C. H. H H H H

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Q: What is the ionic strength of a 0.100 M solution of Na,SO4 with 0.2 M KI?

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Q: Suggest a diene and a dienophile that would give the following products. Part A H Part C

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Q: Provide a reason of using ammonnum hydroxide and ammonium chloride in precipitation of Group IV cati...

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Q: A unknown sample gave a specific rotation of 0 when placed in a polarimeter. What conclusion(s) can ...

A: In organic chemistry the Specific rotation means it is the property of a chiral chemical compound.

Q: What is the concentration of hydroxide ion in a 0.170 M aqueous solution of hydroxylamine, NH2OH? Wh...

A: pH of solution is defined as negative logarithm of hydrogen ions concentration.

Q: Consider the diagrams for solutions A, B and C. Water molecules have been omitted for clarity. Solut...

A: Ionic compound is formed by metal and non metal with considerable electronegativity 

Q: In a Bradford assay, 17 pl of a protein isolate sample was diluted by adding 24 pl of water prior to...

A: Given calibration curve data:

Q: FOxidation Numbers

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Q: Need solution urgently

A: The number of peaks in 13C-NMR depends on number of different carbon. The equivalent carbon have sin...

Q: 1. Determine the common name of group 2A and state the reason for having this name?

A: Since you have asked multiple question, we will solve the first question for you. If you want any sp...

Q: I want plants extracted in these ways: Reflux condenser c) Digestion b) Percolation

A: Reflux extraction is a solid–liquid extraction process at a constant temperature with repeatable sol...

Q: - Claim: Now, rank the substances in terms of the strength of their intermolecular forces from lowes...

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Q: d. Draw the structure of the following heterocycles: 2 3 Naphtha[2,3-b]thiophene 1,6-dimethylphenoxa...

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Q: Does a reaction occur when aqueous solutions of ammonium acetate and aluminum sulfate are combined? ...

A: Let's write the molecular reaction equation between ammonium acetate and aluminum sulfate.

Q: Bicarbonate Buffer a. Prepare 100 mL of 0.200 bicarbonate buffer, pH 10, by calculating the mass of...

A: a-Method I-Prepare a 0.2M arrangement of anhydrous sodium carbonate of 50 ml w = (mw*V*0.2)/1000 w =...

Q: Determine the heat of reaction for the decomposition of one mole of benzene to acetylene C6H6(l)  >...

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

Q: Which of the following statements is true? O lonic strength is a quantity that only depends on the c...

A: Ionic strength of a solution is equal to half of the product of the concentration and square of char...