How does how the molecular identity of the element change in space and/or time? Be sure to make the distinction between organic and mineral forms of the element.

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 142.0 g sample ...

A: Given :-  Amount of heat needed = 11.7 kJ  Mass of substance = 142.0 g  Initial temperature = 51.2°C...

Q: Select the appropriate species from the drop-down boxes to create the balanced overall equation for ...

A: The given line notation represents that the tin electrode acts as an anode and an oxidation reaction...

Q: One key to predicting the relative strength of an acid is to Look at its conjugate base and judge it...

A: A Bronsted-Lowry acid is a chemical that generates a conjugated base by donating a proton or H + ion...

Q: Which solvent would have a higher reaction rate for SN2? ethanol acetone

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Q: A mixture of helium and neon gas is compressed from a volume of 87.0 L to a volume of 40.0 L, while ...

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Q: Calculate the concentration of iodide ions ( I− ) in a saturated solution of lead iodide at 298 K. (...

A: Given, Ksp of PbI2 = 1.39 × 10-8              PbI2(s) ⇌ Pb2+ (aq) + 2 I-(aq) initial:.    - change: ...

Q: H. Al,0, O Al+_0, Туре: I. N, +H2 → NH3 Туре: J. Al+ HCI → _AICI, + H, Туре: K. V,05 + _ HCI → O voC...

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Q: The fundamental requirement for chemical equilibrium is A) that opposing changes must occur at the s...

A: We can say that a system is in equilibrium when there is no net change happening in the system, that...

Q: How many different products can be formed from a poorly planned crossed aldol addition with two diff...

A: In Aldol condensation : the enolate of carbonyl attack and get added to the carbonyl which on heatin...

Q: Give a clear handwritten answer of this reaction...Give the IUPAC name all reactions given bleow...?

A: To find : The IUPAC name all reactions .  

Q: Inside a closed container the pressure of a gas sample is 37.8 atm with a volume of 0.2 L. Upon open...

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Q: 7.) The equilibrium constant, Ke, for the following reaction is 4.63×10 ³ at 25°C. What is the value...

A: given,  N2O4  ⇔ 2 NO2(g) Kc = 4.63 ×10-3 temperature, T = 25 oC = 298 K gas constant, R = 0.0821 L.a...

Q: The equilibrium constant, Kp, for the following reaction is 1.04×102 at 548 K. Calculate Kc for this...

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Q: Propese the below epoxide Starting with cycloheptanone a mechanism for HC CH3 SCH3 CH3 CHs

A: Detail mechanistic pathway is given below

Q: of the following products would require a 2-step reaction for its synthesis?   a Formation of tolue...

A: There occur electrophilic aromatic substitution reaction.  

Q: (Q6) If the equilibrium pH of an aqueous solution is 1.72 and the solution is 0.382 M in formic acid...

A: Given ; pH = 1.72

Q: Refer to the given structure, which of the choices will complete the reaction a. Ethyl chloride and...

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Q: A Chemistry 20 student performs a diagnostic test on the following substances in solution to determi...

A: Electrolyte The breakdown of a substance into positively and negatively charged particles called ion...

Q: What is the pH of a buffer solution that is 0.20 M methyl amine, CH3NH2 and 0.18 M methylammonium ch...

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Q: n the Matlab computations again on your paper and give the final answers on the answer sh Balance th...

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Q: What is the concentration of HOAc in a 0.6M Acetate buffer, pH 7.00? (pKa for Acetic acid is 4.77)

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Q: An electrochemical cell involves the following half reactions: Bra(1) + 2e- 28r (aq) E- +1.09 V Fe2*...

A: Br2(l) + Fe(s) ---> 2Br-(aq) + Fe2+(aq)  

Q: A chemist adds 350.0 mL of a 0.22 mol/L potassium permanganate (KMNO,) solution to a reaction flask....

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Q: Which statement is true when delta H is negative: 1. The reactants have more energy than the produc...

A: ∆H =-ve (negative) Energy is neither destroyed nor created it convert from one form to other form.  ...

Q: Calculate the solubility of copper(II) hydroxide (Ksp = 2.20 × 10¬20) in pure water in grams per 100...

A: The equilibrium constant for the dissolution of a solid substance into an aqueous solution is the so...

Q: Choose the correct Lewis structure and determine the VSEPR shape for each molecule and ion: a. NH3 i...

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Q: 150.0 mL of 0.300 mol/L KOH is added to 150.0 mL of 0.300 mol/L HF. The resulting neutralization rea...

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Q: The reaction AB(aq)A(9)+B(g) is second order in AB and has a rate constant of 0.0140 L- mol-.s' at 2...

A: k = 0.0140 L.mol-1.s-1 [AB]o = 0.188 mol.L-1

Q: If you use 4.76 mol of sodium fluoride (NaF) and dissolve this into 3.62 L of water, what will be t...

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Q: DD 4000 3000 2000 1000 NVENUERl

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Q: A chemist puts 1.50 mol of NOCI(2)) in a 0.500 L container. What are th concentrations of the gases ...

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Q: Why is the monochromator not placed after the TCH lamp when performing an absorbance or transmittanc...

A: Since the basis for the AAS process is atomic ABSORPTION, the monochromator seeks to only allow the ...

Q: ? Na,CrO, Edit Drawing

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Q: The reaction AB(aq)A(9)+B(g) is second order in AB and has a rate constant of 0.0140 L- mol.s at 25....

A: The reaction given is, => Given: The reaction is a second-order reaction. Rate constant of react...

Q: What is the oxidation number of Cl in CIO3? -1 +6 +5 -6

A: oxidation number, also called oxidation state, the total number of electrons that an atom either gai...

Q: a) Which solution(s) containing 1.0 g of salt (NaCl and NHCI are both considered "salts") per 5 mlL ...

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Q: sputreometrey ? pieobable fragmentadion patteen 1 [o (co)3 ( NO) what melas fable plale in mau eaues...

A: mass spectrometry

Q: If 5.00g iron (III) chloride hexahydrate is completely dehydrated,how w many grams of anhydrous iron...

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Q: 3. Using standard reduction potentials from Table L1 of Appendix L in your textbook: Chemistry: Atom...

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Q: The equilibrium constant, Kc, for the following reaction is 1.20x102 at 500 K. PCI5(g) PCI3(g) + Cl2...

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Q: The equilibrium constant, K, for the following reaction is 5.56x103 at 298 K. NH3(g) + H2S(g) NH4HS(...

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Q: Page Оf 16 4. Cobalt Blue: CoCl2 (aq) + Na4SiO4 (aq) Names: and Colors: and Species Initially Presen...

A: We have find out Name and Balanced Net Ionic Equation for Precipitation.

Q: СООН 12 2 1

A: Answer of this question :- 

Q: Draw the major product of this reaction. Ignore any inorganic byproducts HBr (1 equiv) %3D %3D %3D B...

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Q: A student ran the following reaction in the laboratory at 1152 K: 2502(g) + 02(g) = 2s03(g) When she...

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Q: Calculating a molar héát öf réáčtión from formation enthaiples sing the table of standard formation ...

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Q: eg CH.CH-MeBr 2. H;0

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Q: Let's say that tea leaves in a tea bag in hot water are coming out at the rate of a first-order func...

A: Given: The process is first order. Initial amount = 5 units Amount after 10 min = 2.5 units. And the...

Q: 4. Draw 3 resonance structures for each framework, indicate all formal charges, and circle preferred...

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Q: Give the formula and enumerate the functions of the following carboxylic acids: a. Formic acid b. Ci...

A: Given : We have to write the formula and function of these carboxylic acid.