Which is an example of a physical change? O Metal rusting O silver tarnishing O Water boiling O Paper burning

Q: Draw the organic products of the reaction shown. Draw hydrogens on oxygen and nitrogen where…

A: We know that imines contains  C = N  bond These are readily reaction with acid and water conditions…

Q: If two substances react and the temperature of the mixture increases, the reaction is O Endothermic…

A: There are two types of reaction, endothermic reaction and exothermic reactions. In endothermic…

Q: A certain hybrid car has a mileage rating of 53 miles per gallon. If the car makes a trip of 295…

A: We have 53 miles run for 1 gallon, we have run of 295 miles, we have to predict the amount of…

Q: Many processes occur in the digestive system. Which process is best classified as a physical change?…

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Q: 60.0 mL of 0.60 M NAOH is titrated using 0.20 M H2SO4. What is the volume of H2SO4 needed to reach…

A: Given that:4 Molarity of NaOH = 0.60 M Volume of NaOH = 60.0 mL = 0.06 L Molarity of H2SO4 = 0.20 M…

Q: Blue Blue dye stock solution Absorbance at 630 nm Calibration curve A solution is prepared by…

A: Concentration of blue dye stock slution = 0.293 MAbsorbance A = 0.00265The calibration curve y =…

Q: In which of these compounds are there twice as many Oxygen atoms as Hydrogen atoms?

A: To find :- The compound having oxygen atoms two times more than the hydrogen atoms.   We can easily…

Q: The combustion of propane (C3H8) produces CO₂ and H₂O: C3H8 (g) +502 (g) -> 3CO₂ (g) + 4H₂O(g) The…

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Q: A chemist performed a reaction of 2-methylpent-2-ene with HBr in diethyl ether. However, after…

A: To identify the product structure when HBr is added to 2-methylpent-2-ene

Q: Predict the order of elution of a mixture of the following compounds from a column? Briefly explain.…

A: In the given problem,  Compound I is biphenyl  Compound II is Benzoic Acid Compound III is Methyl…

Q: Lead (II) carbonate decomposes to give lead (II) oxide and carbon dioxide: PbCO3 (s)-> PbO (s) + CO2…

A: The percentage ratio of actual yield to the theoretical yield is known as reaction yield.

Q: Iodine has a mass number of 127 and 53 protons, how many neutrons does it have?

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Q: Which two elements on the periodic table are in the same period? O Sn and Rb O K and Ba O F and Cl O…

A: The periodic table is divided into 18 groups and  7 periods.(i)  The 18 vertical columns that goes…

Q: A chemical reaction takes place to allow instant cold packs to absorb energy. This is an example of…

A: Reactions that absorb heat from the environment are called endothermic reactions. A common example…

Q: 6. Give IUPAC names for the following compounds: .CH3

A: Since there are multiple sub-parts, we will answer only first three sub-parts. If you require the…

Q: The element cobalt (Co) has: O 27 protons, 27 neutrons, and 32 electrons. 27 protons, 32 neutrons,…

A: Mass no. Of an element is represent by 'A'. 'A' is the sum of Mass no. & Atomic no.

Q: What number should be placed in the blank in order for this equation to follow the Law of…

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Q: At the same temperature, which of the following gases will have the fastest rate of effusion? A) CO…

A: We know that, molar mass of CO = 28.01 g/mol molar mass of SF6 = 146.06 g/mol molar mass of Cl2 =…

Q: HELP !

A: The functional group in organic is very important. Due to the different functional groups present in…

Q: Estradiol is a potent female hormone. In 1934, Edward A. Doisy of Washington University extracted…

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Q: Retrograde Synthesis Assignment IF Outline a synthesis of the following molecules starting with…

A: Note - Above question is a multiple question , hence I solved first question according to rules of…

Q: Classify each of the following as elements (E) or compounds (C). HCI NaCI CH,COOH Fe element

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Q: Which information could a student determine fromn only the chemical formula of a protein? O The…

A: Welcome to bartleby !

Q: Draw the product of the reaction shown below. Ignore inorganic byproducts. 1. LiAlH4 2. H₂O Drawing…

A: Given,The reaction:

Q: a model explain how hot air balloons float. Your explanation shou elude all of the following: What…

A: A hot-air balloon is a lighter-than-air aircraft. It consist of a bag which is called an envelope.…

Q: Which of the following represents the generic form of a double-displacement reaction? A) A +B AB B)…

A: The reaction that involves exchange of ions between two previous and compounds that upon exchange of…

Q: At 799 K, A,G° = -23.35 kJ for the reaction H2(g) + 2(g) = 2HI(g). Calculate A;G for this reaction…

A: The given chemical reaction is as follows: H2(g) + I2(g) ⇌ 2HI(g) ∆rG°=-23.35 kJT=799 K ∆rG=?

Q: For each of the equations: A. Determine if the equation follows the law of conversation of mass and…

A: According to the law of conservation of mass, mass can neither be created nor destroyed in any…

Q: The enthalpy of fusion of methanol (CH3OH) is 3.16 kJ/mol. How much heat would be absorbed or…

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Q: If two substances react and the temperature of the mixture decreases, the reaction is Endothermic…

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Q: Nitrogen has an atomic number of 7. How many protons does it have? O 7 O 14 O 15

A: Protons are the positively charged subatomic particles present in the nucleus of an atom of the…

Q: Name the following compounds with their common names. Example: H2O is known as water. Google the…

A: Commonly used name of a compound is called common name.

Q: 4. Look at the molecules below. Write in the blank what type of atoms you see and how many. Try to…

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Q: CÓ + OH ® CO2 + H Which substance represented in this equation is classified as an element? О со О…

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Q: If you have 155 solution, how many grams of FeCl3 are contained in this sample? mL solution of a…

A: Stoichiometry

Q: CACO3(s) 2 Ca0(s) + CO2(g) When heated strongly, solid calcium carbonate decomposes to produce solid…

A: Given: Pressure = 1atm Volume = 100L Temperature = 898°C = 898 + 273 = 1171K

Q: Which change can be easily reversed? O Chemical Change O Physical Change O Both a physical and…

A: A physical change happens when a compound undergoes changes in physical properties like color…

Q: Which f the following is an example of chemical change? O Filling up a balloon with hot air. O…

A: Chemical change is a process which results when a substance combines with another substance to form…

Q: Ammonia will decompose into nitrogen and hydrogen at high temperature. An industrial chemist…

A: Given : Volume of vessel = 100 L Moles of H2 present in equilibrium = 51 mol. And initial moles of…