please answer - Why is it cold water can quench thirst easily compared to warm water? - How microwave oven cook food

Q: An ē at its excited state is stable unti it  return  to its ground state. If an ē jumped more than o...

A: An electron jumps from a lower energy level to a higher energy level by absorbing some energy. More ...

Q: To get electrical energy from an Galvanic cell the emf should ans. Positive None Zero Negative

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Q: Under certain conditions the rate of this reaction is zero order in hydrogen iodide with a rate cons...

A: The rate of the zero-order reaction does not depend on the concentration of the reactant. For the ze...

Q: When excess dilute hydrochloric acid is added to a mixture of calcium oxide and magnesium oxide. A h...

A: The name of the two salt produced are Calcium chloride and Magnesium chloride.

Q: (Q81) Hydrogen peroxide decomposes to water and oxygen gas is a first order reaction: 2 H202 (aq) --...

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Q: How many grams of bromine are required to completely react with 22.1g of titanium

A: Titanium on heating with bromine to form titanium tetra bromide.  The reaction given below

Q: Latimer diagrams for oxygen and iron under standard conditions are shown below. (a) Write down two ...

A: Given ,  Latimer diagram  O2   → +0.68 V   H2O2 →+1.78 V     H2O

Q: What are solid substances?

A: Given,  solid substances

Q: Rank the alkyl halides in the following group in order of increasing SN2 reactivity. Br А: Br В: С: ...

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Q: 1. Initially at 300 K and 10 atm pressure, 1 mol of a gas is allowed to expand adiabatically against...

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Q: Write the electronic configuration of: (i) Al3+ (ii)K+ (iii)O2-

A: Electronic configuration of :  i) Al3+ = ?  ii) K+ = ?  iii) O2- = ? 

Q: What is atomic mass

A: Given,  Atomic mass 

Q: Y CH3CH2CHCH=CH2 + HBr CH3 Major Minor (a) Draw the structure ofY and Z (b) Write the mechanism for ...

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Q: Part III. Draw the structure of the following organic compounds. 1. 6-ethyl-2-octyne 2. 4-ethyl-2,3-...

A: It is very important to assign correct position of the substituents mentioned while drawing structur...

Q: how many hydrogen atoms are in 0.1488 of g phosphoric acid

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Q: (Q90) A second order reaction has an initial concentration of 1.46 M. If the half-life of the reacti...

A: Given: Initial concentration = 1.46 M The half-life of the reaction = 32.8 minutes  

Q: 3.28 Look at the following energy diagram for an enzyme-catalyzed reaction: (a) How many steps are i...

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Q: 7. Calcium chloride, is added to a canned vegetables to maintain the vegetable's firmness. When adde...

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Q: Experimental data shows the water-alcohol proportion at 60°C Mole fraction of 0.00 0.05 0.27 0.44 0....

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Q: Consider the following reaction where K, = 83.3 at 500K. PCI3(g) + Cl2(g) PCI5(g) A reaction mixture...

A: Here from the given information we have to predict the direction of equilibrium reaction . For this ...

Q: How to calculate the number of moles of hydrogen in 15.0 moles of C2H6O?

A: • The values provided in the question are:-  i) Number of moles of C2H6O = 15.0 mol   

Q: А. CI b.

A: Given compounds are :  Synthesize the following molecules starting with benzene = ?  

Q: 3.32 Balance the following equations and then write the net ionic equation. (a) (NH,),CO;(aq) + Cu(N...

A: Since you have posted question with multiple subparts as per guidelines we can answer three per ques...

Q: he initial concentration or

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Q: What is the hydronium ion concentration in an aqueous hydrobromic acid solution that has a pOH of 12...

A: Hydrogen ion concentration is an important parameter of an aqueous solution. The concentration of th...

Q: Compute the freezing point depression of 0.1% solutions of the following drugs: (a) ascorbic acid; (...

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for yo...

Q: Consider the following reaction: 4 FeS2 + 11 O2 → 2 Fe2O3 + 8 SO2 When 26.62g of FeS2 reacts with 5....

A: Given data: Mass of FeS2 = 26.62 g Mass of O2 = 5.44 g The molar mass of FeS2 = 119.98 g/mol The mo...

Q: Elements in the same period • A. have the same number of protons. B. have the same principal quantum...

A: Choose the correct option---

Q: Cyclopropane, C3H6, is converted to its isomer propylene, CH2=CHCH3, when heated. The rate law is fi...

A: Initial conc= 3.46*10-2molL-1 Final conc=? t= 7.55*102sec Rate const= 6.3*10-4s-1 1st order reaction...

Q: Below, write the balanced chemical equation for the reaction you observed (including state). NOTES:...

A: Sb(OH)3(aq) + Na2S(aq)  gives a reaction. 

Q: Draw an expanded structural formula of a hydrocarbon that contains sp³, sp?, and sp hybridized carbo...

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Q: Which of the following is the most correct name for this compound? a. (1R,3S)-4-ethylcyclopentanecar...

A: Carbaldehyde is used for naming Aldehyde  because aldehyde group is outside the Ring .

Q: Why is this Beckmann rearrangemnt useful for the synthesis of acetaminophen?

A: A question based on introduction to organic chemistry that is to be accomplished. 

Q: Calculate the standard enthalpy of formation of Cuo (s) from the given thermochemical equation: CuO(...

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Q: Draw the Lewis structures with the correct molecular geometry using VSEPR Theory for C2H2.

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Q: What happens to the rate of an Sy2 reaction when both [RX] and [:Nu ] are halved? The rate (select) ...

A: In the case of SN2 reaction,the rate depend on both the reactant and nucleophile  That is rate (R1)=...

Q: The relative atomic mass of antimony is 121,8. Antimony exists as two isotopes - antimony 121 and an...

A: Given, The relative atomic mass of antimony is 121.8 and it's two isotopes  antimony 121 and antimon...

Q: How to calculate grams of iron (III) carbonate in 1.15 mole of Fe2(CO3)3?

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Q: Molecule ЕPG Нyb (circle if polar) 2D Lewis Structure 3D Lewis Structure MG ВА AsCl5 03

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Q: Properties of a Compound: 4. Arrange in order of decreasing boiling point: NaF, NaBr , Nal, NaCl.

A: The answer is as follows:  

Q: Determine each statement if it is positive or negative base on the chemical structure in the picture...

A: The functional group of a molecule is a key constituent that provides a notable chemical reaction to...

Q: 14.46 Draw structural formulas for the products of the following hydrolysis reactions: OCH,CH, OCH,C...

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Q: You need to make 7.04 L of 1.32 M KNO3. What molarity would the potassium nitrate solution need to b...

A: The law of dilution can help to prepare low concentration solutions by using stock solution. 

Q: 4. A buffer is prepared containing 1.00 M acetic acid and 1.00 M sodium acetate. What is its pH?

A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The buffe...

Q: A rock is 17.5% by mass fayalite (Fe2SiO4), 17.6% by mass forsterite (Mg2SiO4), and the remainder si...

A: Answer: First of all we will calculate the mass of each element in fayalite, frosterite and silicon ...

Q: Flame test is an example of whatb type of atomic spectroscopy? Emmsion O Absorption O Fluorescence P...

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Q: 3.30 Name the following cycloalkenes: (a) CH3 (b) (c) (d)

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Q: Give systematic names for the compounds a.) b.) and c.) please

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

Q: None of the above

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Q: It is process in which atoms undergoes  an increase in oxidation number in called? Select one: a. R...

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Environmental Pollution

Environmental pollution occurs due to some unwanted alteration in the surroundings which results in unfavorable effects on all organisms of that surrounding.