What is the sum of the following two numbers reported to the correct number of significant figures? 12.426 ± 0.002 + 1.3 ± 0.1 O a. 13.726 O b.14 O c. 13.73 O d. 13.7

Q: Write in the products, including stereochemistry where relevant, of the compound given in the photo ...

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Q: Refer to the (unbalanced) equation CS2+ CaO –→ CO2 + CaS. How many grams of CaS are produced if 53 g...

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Q: The structure below represents a tetrahedral alkoxide-ion intermediate formed by addition of a nucle...

A: In the given intermediate the tetrahedral carbon formed the acid derivative attached with an ester g...

Q: Please provide the IUPAC name and COMMON NAME of the given structure.

A: IUPAC nomenclature is used for naming the organic compound as recommended by international union of ...

Q: Nitrogen monoxide, NO, is formed in automobile exhaust by the reaction of N2 and O2 (from air). N2 (...

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Q: The molecules shown below are A) Identical molecules B) Stereoisomers C) Constitutional isomers D) I...

A: ->Cis ,trans isomers are stereoisomer.  

Q: hat is the rms speed (m/s) of NO2 at 28.4 degrees Celsius?

A: Given : Temperature = 28.40C  

Q: + OH" (aq) - H,00) + A"(aq)

A: Given, Molarity of NaOH = 0.150 M Volume of NaOH = 500 mL mmol of NaOH = M ×  V   = 0.150 ×500 = 75 ...

Q: Calculate the pH of the following: 0.20 M arginine  hydrochloride

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Q: How many grams of PbBr2 will precipitate when excess NH4Br solution is added to 66.0 mL of 0.601 M P...

A: Pb(NO₃)₂ + 2 NH₄Br → PbBr₂ + 2 NH₄NO₃ The number of moles of Pb(NO3)2 = 66.0 mL soln × (1 L soln / 1...

Q: Provide the correct IUPAC name for the skeletal (line-bond) structure shown here.

A: The IUPAC name of the compound can be written on the basis of the number of carbon atoms in the main...

Q: How would you use a Grignard reaction on an aldehyde or ketone to synthesize the following compounds...

A: The Grignard reagent reacts with an aldehyde to form secondary alcohol and it reacts with a ketone t...

Q: The ?a of a weak monoprotic acid is2.72×10−5. What is the pH of a 0.0751 M solution of this acid?

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Q: For the combustion of carbon monoxide; CO + 1/2 02→ CO, find the ratio of the equilibrium constants ...

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Q: HO 2. -6 steps H2N + any 1C reagents OH

A: The crucial steps for the given conversion are 1. Protection of carbonyl 2. Reaction with grignard 3...

Q: 12. Select the TWO expressions that represent the following system: Et „N (aq) + PHNH,+(aq) Et „NH+ ...

A: The reaction given is,  

Q: Predict the sign of the entropy change, AS°, for each of the reaction displayed. Drag the appropriat...

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Q: Which metal may ensure the galvanic protection of the steel body of your watch? Group of answer choi...

A: Rusting of steel: steel has a major composition of iron. Rust is the result of corroding steel after...

Q: For the reaction   N2(g) + 3H2(g) ⇌ 2NH3(g)   Kc is 10.5 at 331°C. Calculate KP for the reaction...

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Q: The equilibrium constant for the formation of ammonia from nitrogen and hydrogen is 1.6 × 102. What ...

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Q: chemistry MCQS produce a trans-1,2-diol with 2-butener OsO4 in pyridine followed by Na2SO3 OsO4 in N...

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Q: Determine the pH change when 0.060 mol HI is added to 1.00 L of a buffer solution that is 0.417 M in...

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Q: Write the ground state electron configuration (with a noble gas core of [He], [Ne], . . . , ) of an ...

A: ground state electron configuration of P- Total number of electrons in P- : 16

Q: 30:(9) -- 20:(9) decreasing the volume will shift equilibrium in the direction of products decreasin...

A: To identify: The shift in the equilibrium due to a decrease in the volume.  

Q: Complete and balance the reaction in acidic solution. ZnS + NO3- > Zn 2+ + S + NO

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Q: Part D Calculate the standard-state entropy for the following reaction: 1 CH4(g) + 2 O2(g) → 1 CO2(g...

A: Given,  Sm° (H2O) = 189 J/K.mol  Sm°(O2)  = 205 J/K.mol  Sm°(CH4) = 186 J/K.mol  Sm° (CO2) = 214 J/K...

Q: For each chemical reaction in the table below, decide whether the highlighted reactant is a Bronsted...

A: In the table given, we need to identify the acid and base (Bronsted Lowry)

Q: Active Site 2 3 HN- NH2 2-OPO 4 Но Но- HO OHa 1

A: In the given question, the active side contains many functional moieties.

Q: The ionization constant, Ka, for weak acid, HA, is 3.96 × 10-10, What is the pH of a 0.5213 M soluti...

A: Ka = 3.96 x 10 —10  

Q: Suppose a student wants to determine the color change interval of an unknown indicator. Her results ...

A: The experiment data given is,  

Q: Cations and anions from the representative elements in ionic compounds will be (a) paramagnetic (d) ...

A: Since you have posted multiple questions, as per our company guidelines we are supposed to answer on...

Q: Precipitation is the opposite of dissolution. Group of answer choices True False

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Q: For the chemical reaction system described by the diagram below, which statement is true? Energy Rea...

A: Activation energy is energy difference between reactant (or) product and energy barrier.  

Q: The byproduct of the photo dimerization of benzophenone to benzopinacol is?

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Q: What type of intermediate is present in the SN2 reaction of cyanide (CN) with bromoethane? carbocati...

A: What type of intermediate present on reaction as given via SN2 reaction---

Q: Q2) A: Draw the crystal atomic planes with following Miller indices. (110), (101), (011), (111), (22...

A: Miller Indices is for denoting planes in crystal structure. Here we will draw the planes in a simple...

Q: Give the balanced net ionic equations Barium hydroxide (aq) + acetic acid (aq) Barium acetate(aq) +...

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Q: A solution is made by adding 0.320 g Ca(OH)2(s), 35.0 mL of 1.10 M HNO3 and enough water to make a f...

A: Given,  Mass of Ca(OH)2 = 0.320 g  Volume of HNO3 = 35.0 mL  Molarity of HNO3 = 1.10 M  Final volume...

Q: Give an example for each of the following and provide an explanation.   1. A spontaneous process 2. ...

A: A spontaneous process is the process which takes place on its own without any external force. 

Q: PH3 2. H2O 3. CO2

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Q: The system has the least symmetry among the seven crystal systems. triclinic monoclinic rhombohedral...

A: Option A is correct answer Triclinic

Q: 'CI

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Q: changes. 2. An equilibrium exists when a reaction's forward rate eguals its reverse rate. Answer the...

A: For a fixed volume of solution, concentration = Number of mols  Then rate of consumption of reactant...

Q: A solution of methylamine (CH3NH2), a weak base, has an initial concentration of 0.272 M. Methylamin...

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Q: Balance the equation in basic conditions. N2H4 + Cu(OH)2 -> N2 + Cu

A: Balance chemical reaction: 2 Cu(OH)2 + N2H4 ---> 2 Cu + N2 + 4H2O

Q: An iron ore was analyzed by dissolving a 2.9912-g sample in concentrated HCI. The resulting solution...

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Q: What is the major product of the following reaction? HO OH он

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Q: What will be the major organic product from the acid-catalysed hydration of 1- butene (CH,=CHCH,CH)?...

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Q: What general classification is given to the molecule below? CI secondary chloride O benzyl chloride ...

A: To solve this problem we will use the given molecules . 

Q: Part 4: Answer the following question.  12. Using the vocabulary terms atom and element appropriate...

A: Atom and element: If we look very precisely then an atom is the part of an element. A particular ele...

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.