If a system has 20.5 J of heat added to it, and the system does 75.5 J of work on its surroundings, what is the change in the internal energy of the system, in J?

Q: Identify the acid, base and conjugate acid(CA) and conjugate bases (CB) of the reaction   a.) HCO3-…

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Q: For the atom with Z = 6. a. The atomic symbol is b. The name of this atom is c. This atom is in…

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Q: If Magnesium hydroxide is a white gelatinous precipitate, why is the confirmatory result indicated a…

A: Confirmatory Test of Mg2+ 1. For the test of Mg2+ , In a sample of Mg2+ solution, 2 drops of…

Q: Sodium azide, an explosive chemical used in automobile airbags, is made by the following reaction:…

A: Given, mass of NaNO3 = 10.0 g mass of NaNH2 = 15.0 g percentage yield = 100%   To calculate : mass…

Q: Find ∆Stotal (entropy change) when 100 grams of water vapor initially at 200 degrees Celsius…

A: ∆Stotal (entropy change) when 100 grams of water vapor initially at 200 degrees Celsius undergoes a…

Q: QUESTION NO. 15: From the energy profiles for the two reactions below, how will the rates of the two…

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Q: OH Determine the type of alcohol the molecule shown here. A) primary B) secondary C) tertiary D)…

A: Note: As per our guidelines, we are supposed to answer only one question when multiple questions are…

Q: Use the data below, for 298.15 K, to calculate the following quantities for the decomposition of…

A: The change in enthalpy and entropy of the reaction can be calculated by the difference between the…

Q: Based on the structure listed below, indicate the set of stretching frequencies (cm) that would be…

A: We have to select the stretching frequencies for the given structure

Q: A 0.5 g of a sample of an acid was dissolved in water and neutralized to 25 mL of 0.025 N NaOH.…

A: Mass of acid = 0.5 gram  Volume of acid = 25 ml = 0.025 litre  Normality = 0.025 N  To Calculate :…

Q: Potassium fluorine is used for frosting glass. Calculate the molarity of a solution prepared by…

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Q: A diatomic molecule A-B with a reduced mass of 9.954 g/mol and moment of inertial (/) of 3.3029x1041…

A: Here we are required to find the bond length

Q: Part A H₂C. CH₂ 'H H₂C Draw the molecule on the canvas by choosing buttons from the Tools (for bonds…

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Q: Which Nitrogen containing compound is the most basic? N H (B) N NH4 G

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Q: Q3: Air undergoes a three-process cycle. if the processes are :1→ 2: constant- pressure expansion…

A: We have to calculate the work done for all the three cycles:

Q: Complete Assignment M 5.3.1 Use a sheet of paper to answer the following question. When complete,…

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Q: Provide the correct common name for the compound shown here. 6- 5-3- 4- 2- 1- tert-iso sec- di tri…

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Q: What is the correct order for the ease of dehydrating alcohols? tertiary > secondary> primary ○…

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Q: An analyst determines the Cl^- content of rain water with ion chromatography. The data for the…

A: There is a high probability that an analytical instrument will produce a signal noise whenever a…

Q: (a) Que the albuciones of missing heats raks (ख) and products & thandl Pentanal Acetic acid Salicy…

A: Here we are required to draw the structure of the ester formed.

Q: ctrum: B a. D C D E F G H -Vight 32 th peak correspond to the 3->2 transition?

A: According to the question, we have to answer both the question.

Q: A noncarbonated soft drink contains an unknown amount of citric acid, H3 C6H5 O7. If 100. mL of the…

A: Given :  Volume = 100 ml  Volume of NaOH solution = 35.96 ml  Concentration of NaOH solution =…

Q: What is the normality of 15 mL of an acid if it is neutralized with 125 mL of 1.5 N NaOH.

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Q: You have a mixture of oxalic acid, H₂C2O4, and another solid that does not react with sodium…

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Q: What volume of 0.125 M oxalic acid, H₂C₂O4, is required to react with 59.8 mL of 0.570 M NaOH? H₂…

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Q: A cat has volume 0.08 m³ and density 670 kg/m³. Find the mass of the cat ?

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Q: You have 250. mL of 0.125 M HCl. Using a volumetric pipet, you take 50.00 mL of that solution and…

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Q: Which of the following is NOT a chain isomer of n-hexane? O a. 3-methylpentane O b.…

A: Chain isomers are molecules having the same molecular formula but differ in the arrangement of…

Q: What volume of 0.860 M HCl, in milliliters, is required to titrate 2.01 g of Na2CO3 to the…

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Q: ▼ ▼ Part B H₂CH²_H²_N_CH₂ Spell out the full name of the compound. N-methyl propanamine H Submit…

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Q: Synthesize each compound from acetylene. You may use any other organic or inorganic reagents. e.…

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Q: What is the number of mole for 4.3 g of CH4? please only type the answer without the unit Answer:

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Q: Gaseous methane (CH₂) reacts with gaseous oxygen gas (O₂) to produce gaseous carbon dioxide (CO₂)…

A: Here, we have to calculate the theoretical yield of water when 0.48 g of methane reacts with 0.92 g…

Q: The kinetics of a gas phase reaction of the form A → Products results in a rate constant of 1.308…

A: Given,  A → Products The rate constant( k) = 1.308 M-1 s-1  Initial concentration of A = 0.153 M.…

Q: What has been linked to periods of increased global temperatures?

A: A question based on environmental pollution that is to be accomplished.

Q: How much volume (in Liters) is required to neutralize 126 mL of 0.55M H3PO4 if we use a 3M Ca(OH)2…

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Q: 1. Calculate the standard cell potential of a voltaic cell that uses the Cu/Cu₂+ and Cl₂/Cl…

A: There is more than one question,and as per answering guidelines I can answer only the first one.if…

Q: Question 7: Diethyl ether has a normal boiling point of 34.6 °C and a boiling point of -1.5 °C at…

A: Given, The normal boiling point of diethyl ether (T1) = 34.6°C = (34.6° + 273.15) K = 307.75 K…

Q: Provide the correct IUPAC name for the compound shown here. OH 5- Question 9 of 20 3- 5,5- 1-…

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Q: Gaseous methane (CH₂) reacts with gaseous oxygen gas (O₂) to produce gaseous carbon dioxide (CO₂)…

A: Given, Gaseous methane (CH4) react with gaseous oxygen (O2) to produce gaseous carbon dioxide (CO2)…

Q: QUESTION NO. 18: Which of the following reaction where Kp is not equal to Kc? O…

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Q: НО. ОН

A: Hybridization of following  carbon and functionality is given as .

Q: A solution of hydrochloric acid has a volume of 127 mL and a pH of 2.56. What mass of NaHCO3 must be…

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Q: name the compound NS4

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Q: Provide the correct IUPAC name for the compound shown here. H3C H3C CH₂-CH₂ H₂C-CH3 CH3 4

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Q: Draw the major organic product of the reaction shown below. OH Na₂Cr₂O7 H₂SO4, H₂O

A: In the given question, the substrate is a primary alcohol and it is treated with reagent…

Q: OH SN 2 A. PBV3 B. H₂SO4 SN 2 C. H- Br, SHI D. H-Br, SN 2 > Br

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Q: Compound A has a room-temperature solubility of 30.2 g/L in a certain solvent, while compound B has…

A: Given the solubility of A = 30.2 g/L i.e 30.2 g of A is soluble in 1 L of the solvent.  Solubility…

Q: Which of the following is NOT a chain isomer of n-hexane? O a. 3-methylpentane O b.…

A: Isomers are those structures which are different in Molecular structure but their Molecular formula…

Q: Estimate the IR stretching frequency (in cm³¹) for the indicated bond in the molecule below. Do not…

A: Given ,  Bond under consideration C=O