Br H,C

Q: expanding gas does 171 J of work on its surroundings at a constant pressure of 1.02 atm. If the gas ...

A: Work (w) = -171 J Pext = 1.02 atm Initial Volume (V1) = 68.0 mL        = 0.068 L Work = -Pext.(V2 - ...

Q: For the reaction 2 PbO (s) + 2 SO2 (g) 2 PbS (s) + 3 O2 (g), it can be calculated from AG°F values t...

A: Using relation between ∆G and ∆G ° , we will calculate ∆G .

Q: Calculate the mass of ammonia knowing that ammonia gas has a molar mass of 17 grams per mile and tha...

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Q: A 100.0 mL sample of 0.18 M HCIO4 is titrated with 0.27 M LIOH. Determine the pH of the solution aft...

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Q: 1.Draw the starting structure that would lead to this major product 2. Draw the major product of thi...

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Q: A sample of wooden artifact is found to undergo 9.0 6C 1? disintegrations per minute per gram of car...

A: Given: The activity of wood sample = 9.0 disintegrations per min. The activity of fresh wood = 15 di...

Q: Question 1 of 23 Submit What is the smallest whole-number coefficient for H2S when the equation H,S ...

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Q: Consider the titration of a 30.0 mL sample of 0.150 M CH3COOH (Ka=1.8×10−5) with 0.200 M NaOH. Deter...

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Q: How many photons with a wavelength of 350 nm are needed to deliver a total of 7.52 x 10-14 joules of...

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Q: For A → products, time and concentration data were collected and plotted as shown. [A] (M) t (s) 0.6...

A: According to the graphical method of finding the order of the reaction  If the graph of concentratio...

Q: `NH HNO3 `NH H2SO4 NO2 Acetanilide para-Nitroacetanilide

A: We have to draw the curly arrow mechanism for this reaction showing step by step and also draw two a...

Q: What is the ionic salt formula for Cobalt (II) carbonate and is it aqueous or solid?

A: Explination- 1)Cobalt carbonate salt formula is CoCO3.Calcium carbonate (CaCO3) is insoluble, so it ...

Q: Fill in the missing symbol in this nuclear chemical equation.

A: In radioactive reaction both side of the reaction have same atomic number and same atomic mass

Q: nce the following reaction and determine how many electrons are transferred. g + 02 -> Mgo 8 2.

A: When randomness increase then entropy increases.   

Q: What mass of calcium chloride, CaCl₂, is needed to prepare 3.509 L of a 1.56 M solution? A) 49.3 g B...

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Q: 49. When 2.50 g of methane burns in oxygen, 125 kJ of heat is produced. What is the enthalpy of comb...

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Q: At 25 °C, an aqueous solution has an equilibrium concentration of 0.00167 M for a generic cation, A+...

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Q: how do I convert 18ml of oxygen to moles of oxygen, please show work so I can see how to do the othe...

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Q: do 1-butanol and/or 2-butanol have a positive reaction with H2SO4?

A: 1-butanol and/or 2-butanol with H2SO4 reactions are given below. 

Q: To start off your experiments in magnetism, you've decided to buy 423 moles of whichever elemental m...

A: 1 pound =453gm If I start magnetism with  Fe, Fe molecular weight =55.8 gm/mol We need 423  mole Fe....

Q: If 5 g of compound X is made to react with 3 grams of Y in water in a constant pressure coffeecup ca...

A: The reaction given is, Given: Mass of X reacting = 5 g Mass of Y reacting = 3 g Ccal = 10 J/oC Decr...

Q: write the condensed formula for this

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

A: Reaction involved:  HCl(aq) + NaOH(s)-----> NaCl(aq) + H2O(l) Number of moles of HCl =(mass given...

Q: Given that AH is negative and AS is positive for a reaction, the reaction will be O spontaneous at l...

A: Given that the sign of ∆H is negative and the sign of ∆S is positive.

Q: How many grams of Calcium phosphate that has an excess Hydrochloric acid can be produced from the re...

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Q: Predict the geometry for each red-highlighted atom and give the hybridization of that center

A: hybridization is the concept of mixing atomic orbitals to form new hybrid orbitals suitable for desc...

Q: Br Br OH b. a. ОН -CH2OH d. -COOCH3 C.

A: Note : As per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost...

Q: e table below you will find three descriptlons of sclentIsts engaging In activities that are p descr...

A: The missing word in the given discription given below.

Q: We used to perform this experiment using diethylether or THF as the reaction solvent. We now use DCM...

A: Introduction: Solvents are mainly two kinds i.e. polar and nonpolar. The polarity of the solvent is ...

Q: Predict the geometry for each red-highlighted atom and give the hybridization of that center

A: Consider the given compound with a highlighted atom is as follows;        Geometry of the highlighte...

Q: Part A Kr-74 Express your answer as a nucle

A: According to the question, we need to determine which modee of decay will the unstable nuclides foll...

Q: What is the angle between the two sp atomic orbitals of carbon?

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Q: O Rate k [HI][ICI] O Rate k [H2][ICI]² [HI] O Rate = k [H2][ICI] %3D [HCI]²{I2] Rate = k [H2][ICI]? ...

A: Mechanism given:  H2 + ICl -----> HI + HCl     (slow)  HI + ICl -----> HCl + I2        (fast) ...

Q: For the same reaction as in the previous problem, what is AS° (in kJ/K)? O +.9076 +.1528 O - .0621 O...

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Q: A 15.00 ml aliquot of a 0.75 M solution of a weak acid (K, = 1.50E-05 at 25°C) is titrated with 0.50...

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Q: Name the alkyl group as if the dashed line were where it was connect to the rest of the molecule, st...

A: Name- 1ethyl-1-methylpropyl Carbon - tertiary alkyl halide

Q: It was important that no water gets on the aluminum foil during the heating process. If water does g...

A: Ideal gas equation gives the relation between 4 different parameters of air. The parameters pressure...

Q: What is E°cel for the following balanced redox reaction in acidic solution? 12 + 5 NiO2 (s) + 8 H* 2...

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Q: An aqueous solution has a pOH of 4.771.  What is the H+ concentration (in M)?

A: pOH = 4.771 pH + pOH = 14

Q: Consider the reaction below for the combustion of methane (CH4, which is the principal component of ...

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Q: What is the standard electrode potential for the reaction 2 Cr + 3 Pb²* → 3 Pb + 2 Cr3*? Standard Re...

A: Standard reduction potential :-  E°Pb2+/Pb = -0.13 V  E°Cr3+/Cr = -0.74 V  Cell reaction :-  2 Cr + ...

Q: A certain reaction has an activation energy of 72.14 kJ/mol. At what Kelvin temperature will the rea...

A: Activation Energy:             For atoms to undergo a chemical transformation, they need the energy ...

Q: One kind of polyester is a condensation copolymer formed between terephthalic acid and ethylene glyc...

A: The monomers given are,  

Q: The molecular view of a gaseous mixture is shown. Arrange the gases in the mixture from highest part...

A: Partial pressure of a gas is defined as pressure of individual gas exerted in mixture of gases. 

Q: Calculate the percentage yield: Preparation of N-(4-hydroxy-phenyl )-proponiamide ; To a suspension ...

A: Synthetic organic chemistry involves the conversion of reactants into specific products by using the...

Q: Starting with equal moles of each solute, predict the direction in which the following reaction will...

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Q: Arrange the following groups in rank order from the highest ranking group to the lowest ranking grou...

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Q: Br Br CH3OH (а) (b) OCH3 ČH3 ČH3 CH3 CH3OH (с) (d) Br OCH3 + Br' CH3

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Q: Determine the major axis of symmetry for the following 2-dimensional shape: (А) С, (В) С, (С) С,

A: Axis of symmetry are also known as rotation axis.  

Q: Be sure to answer all parts.   Balance the following skeleton reaction and identify the oxidizing an...

A: The reaction is given in Acidic medium so H+ is present in the reaction. The balancing of the reacti...

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.