Dehydration of body tissues is a chemical change  True  False

Q: Aqueous hydrochloric acid (HCI) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium ...

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Q: Kristen places 1.39 ml of nitrogen gas at -38.5 °C into an insulated adjustable flask. 2 hours later...

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Q: Calculate the molality of a solution that contains 51. 2 g of naphthalene, CH, in 500 mL of carbon t...

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Q: Section A the solid is warming but also not melting. Section B is Melting. Section C the Liquid is...

A: Answer : From temperature, -5oC to 5 oC, solid states gets heated ( part a) from temperature 5 oC ( ...

Q: 25. Select the correct statement. a) Nat and K*,are isoelectronic because they both lost one electro...

A: Isoelectronic species are those atoms or ions having same number of total electrons, no matter what ...

Q: 24. Which of the following arrangements is in order of increasing size? a) Ca2+ K* > Cl-> S2- b) S2...

A: Given,  Ca2+ , Cl- , K+ , S2-  the size of ions increasing order is :

Q: What is the pH of a solution containing 0.428 mol L-1 NH3 and 0.412 mol L-1 NH? Round your answer to...

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Q: Activity 4 K, and K, Directions: Write the equilibrium constant expression (K, and A, ) for the foll...

A: The equilibrium constant of a chemical reaction is the value of its reaction quotient at chemical eq...

Q: Identify the MAJOR product(s) that would be obtained from the following TWO-STEP reaction sequence. ...

A: The detailed answer of the given question is solved in the white sheets of paper attached below.  Th...

Q: Determine the number of moles of the compound and determine the number of moles of each type of atom...

A: As per our guidelines we can only solve first three sub-parts. Please resubmit the other questions a...

Q: For items 11 to 15 Predict the direction of the reaction that will be favored by the system below wh...

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Q: 4 rate=k[A]a[B]b Assuming volumes add, can I use volume % for concentration in this equation instead...

A: Generally we are using molarity terms in rate law equation.  Unit of molarity is mol/L which is also...

Q: 1. Before Planck's theoretical work on blackbody radiation, Wien showed empirically that AmaxT = 2.9...

A: Given:-   we have to derive the equation of weins displacement law.

Q: Estimate the value of the absolute zero temperature.

A: Absolute zero temperature is the lowest temperature in the thermodynamic system and at this temperat...

Q: A gas storage cylinder in an ordinary chemical laboratory measures 2.0 cm wide and 8.0 cm high. This...

A: We are given a cylinder of certain width and height containing Nitrogen gas at a certain pressure. W...

Q: 6. In emission, a) an electron moves from an excited state to a lower energy state, and energy is re...

A: An electron can move from one energy state to another by absorbing or releasing energy depending on ...

Q: Based on the cell potential measured for the cells Co(s) | Co²*(aq) || Cu²*(aq) | Cu(s) Fe(s) | Fe²*...

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Q: Consider a gas of hydrogen atom filling a cubical box of side length 1 m. Assume that all hydrogen a...

A: The electronic configuration of a hydrogen atom in its ground state is 1s1 which means it is present...

Q: -[ ] PhLi HONH,, HCI A C ELOH B D

A: The solution of the question is given below:

Q: Would a solution that contains equal volumes of 0.10 M NAOH and 0.20 M Na*CiO" (sodium hypochlorite)...

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Q: Given the following reactions: 2S(s) + 3O2(g) → 2SO3(g)                 ΔH = -790 kJ S(s) + O2(g) ...

A: Hess's law is defined as amount of energy released or absorbed is same wheather the reaction take pl...

Q: Draw the major product of this reaction. Ignore inorganic byproducts. 1. LIAIH4 2. H20 Select to Dra...

A: Lithium Aluminum Hydride (LiAlH4 ) is a strong reducing agent. It can reduce alcohol, ester, ketones...

Q: Which IR band is most likely to result from this structure? A) 3020-3100 cm1, Medium B) 2850-2960, M...

A: IR spectroscopy.

Q: ded för this question. In the laboratory a "coffee cup" calorimeter, or constant pressure calorimete...

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Q: The concept that exactly 2 electrons are shared between two nuclei means that this is a ___ bond.  ...

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Q: In the UV assay of paracetamol you are required to weigh tablet powder “…containing 0.150 g of Parac...

A: Answer : 1 tablet should contain  500 mg of paracetamol so  20 tablet contains  = 500*20 = 10000 mg ...

Q: e pH of

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Q: give the iupac name. do not use the 2013 method of organic nomenclature.

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Q: Problem: What is the percent yield of a reaction that produces 12.5 g of the Freon (CF2CI2) from 32....

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Q: Which of the following forms of electromagnetic radiation has the longest wavelength? a) b) c) d) mi...

A: Given :-  foms of electromagnetic radiation ;  microwaves  ultraviolet  infrared  radio-waves  To ...

Q: Given the following reactions   Fe2O3(s) + 3CO(s) → 2Fe(s) + 3CO2(g)              ΔH = -28.0 kJ  ...

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

Q: Draw the major product of this reaction. Ignore inorganic byproducts. CI 1. (CH3)2CULI (excess) 2. H...

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Q: Rank the samples of gas described in the table below in order of increasing average speed of the ato...

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Q: In the laboratory a "coffee up" calorimeter, or constant pressure calorimeter, is frequently used to...

A:   66.29 g of zinc at 98.43 ◦C drops into 84.67 g of water at 23.26 ◦C. Final temperature of the solu...

Q: Problem 2: Show the fragmentations for4-methyl-2-pentanone radical carbocati on and eplain why thàti...

A: Mass spectra provides the information about the molecular formula and the possible fragmentation of ...

Q: .. Identify the MAJOR product(s) that would be obtained from the following reaction. HBr Me Br (1:1 ...

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Q: Br Ph Br Br. Н. OH H- OH Br S. H- HO Me Ме HO. OH H- OH Но -H HO- OH H OH Но -H- HO OH но HO HO HO. ...

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Q: Mixing water and arterial fluid in the reservoir of the machine is called secondary dilution.  True...

A: mixture of arterial fluid  with water and /or supplemental fluids is called primary dilution.   

Q: If we locate an electron to within 20 pm, then what is the uncertainty in its speed?

A: As per Heisenberg's uncertainty principle, it is not possible to estimate the exact position or velo...

Q: A sample of Nitrogen gas occupies a volume of 26.2 ml at 87.4°C. What temperature in °C will it need...

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Q: The chemical which reacts with  HCHO to produce a harmless material called urotropin is ___. This ca...

A: We have to give the name of the compound or chemical which reacts with  HCHO to produce a harmless m...

Q: Which of the following will not affect systems in equilibrium? A. adding a catalyst B. changing the ...

A: Le Chatelier's principle: According to the Le Chatelier's principle when a change in concentration t...

Q: freezing point

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Q: Provide the proper IUPAC name for the alka CI HO.

A: The numbering will be start from -OH group and then double bond and in last chlorine atom.  For -OH ...

Q: NH3 is a weak base. HCl is a strong acid. Based on these observations, one would expect the pH of a ...

A: NH4Cl is a salt made by addition of NH3 and HCl. 

Q: Arrange the following from lowest to highest entropy: SiO2(s), SiBr4(4), SİCL (g), SiC(s). Assume 1 ...

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Q: Draw the structure of the organic compound with the IUPAC name (2Z)-3-sulfanylhex-2-en-4-ynedial.

A: IUPAC -  International  union of Pure and Applied  chemistry.  It is a member of the international s...

Q: thermometer A 59.1 g sample of quartz is put into a calorimeter (see sketch at right) that contains ...

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Q: A[CH,0] For the reaction below, what is with respect to At 2 C2H4(g) + 2 O3(g) – 4CH20(g) + Ö2(g) 4 ...

A: CH2O is a product and O3 is a reactant. The rate of consumption of a reactant is related to the rate...

Q: Order the elements S, Cl, and F in terms of increasing atomic radii. a) F, Cl, S b) Cl, F, S c) F, S...

A: Answer: This question is based on the periodicity where physical properties of an  element changes a...