5.00 mol of a perfect gas expand isothermally at 298 K from 2.00 dm3 to 12.00 dm3 Calculate the work done for an expansion against an external pressure of 200000 Pa:

Q: mass

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Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 225. kJ during a ...

A: a.) To Calculate the change in energy of the gas mixture , we would use first law of thermodynamics....

Q: mass

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Q: A weak acid has a Ka of 2.5×10^-5.  What is the Kb of its conjugate base?  Which is stronger, the ac...

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Q: A 13.3 L scuba tank contains a mixture of nitrogen, oxygen, and argon. 72% is nitrogen, 4% is argon,...

A: Answer: In this question, composition of each gas in scuba tank is given and we have to find out exa...

Q: Liquid octane (CH(CH, CH, reacts with gaseous oxygen gas (0, to produce gaseous carbon dioxide (CO, ...

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 674.0 mg sample...

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Q: You own a pharmaceutical company that is manufacturing the experimental drug inhaler for COVID-19 di...

A: The production yield depends on the environmental conditions and use of suitable catalyst which decr...

Q: Liquid hexane (CH; (CH,), CH;) reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide...

A: No. of moles = mass/molar mass  Mass = moles × molar mass  Percent yield = {actual yield/theoretical...

Q: che net chemical equation for ti

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Q: What happens to the intermolecular forces during phase transition? What is the relationship of phase...

A: IMF stands for  intermolecular forces During the phase transition, the intermolecular forces of attr...

Q: A 350.0 g lead rod is heated and then is placed into an insulated vessel containing 50.0 g of water ...

A: We know that if two bodies that have significant difference in temperature, are in contact, the heat...

Q: [OH-] = 5.0 × 10–2 Express the concentration to two significant figures and include the appropriate ...

A: Consider the given information is as follows; OH-=5.0×10-2H3O+ = ?Acidic, basic or neutral = ?      ...

Q: ОН CH,=CH–Ĉ–CH3 CH3-CH2-CH2-C-H A + CH,CH3

A: It is Robinson annulation reaction.  

Q: Nitrogen monoxide and ozone react to form nitrogen dioxide and oxygen, like this: NO(g)+O3(9) → NO,(...

A: NO+O3 = NO2+O2 If temperature is raised the pressure of O3 will decrease ( endothermic reaction ) . ...

Q: The following equation shows the equilibrium in an aqueous solution of methylamine: CH3NH2 (aq) + H2...

A: Given :  CH3NH2(aq) + H2O(l) <----> CH3NH3+(aq) + OH-(aq)  To identify :-  Conjugate acid-base...

Q: A 300. LL kiln is used for vitrifying ceramics. It is currently operating at 1245 ∘C∘C , and the pre...

A: Given values-> Volume= 300L T= 1245°C = 1245 + 273 =1518K  P= 0.9500 atm    

Q: 7.) Given: Solubility product for a series of hydroxides: BiOOH Ksp = 4.0 x 10-10 = [BiO+][OH-] Be(O...

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Q: Draw the major organic product(s) of the following reactions

A:   (g) With alpha hydrogen containing carbonyl compounds inpresence of dil.base give beta-hydroxy car...

Q: The Ka for HF is 7.0 x 10-4 Kb for the fluoride ion is

A:   at 25°C  Ka  x Kb  = 10-14  Given that  Ka = 7 x 10-4  HF is weak acid and its conjugate base is F...

Q: Aqueous hydrochloric acid (HC1) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium ...

A: Reaction: HCl (aq) + NaOH (s) → NaCl (aq) + H2O (l)   Actual  yield of water = 0.381 g mass of HCl =...

Q: Calculate the entropy change of the surroundings when 1 mol of a perfect gas expands isothermally (a...

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Q: 0. What are the empirical formulas of the compounds with the following compositions? (a) 2.1 percent...

A: Note: As per our guidelines, we are supposed to answer only one question when multiple questions are...

Q: The following reaction is first order in N2O5N2O5: N2O5(g)→NO3(g)+NO2(g)N2O5(g)→NO3(g)+NO2(g) The ...

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Q: he net chemical equation fc

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Q: The typical grade of Pine Point ore is 3% for Pb, and 7% for Zn. Suppose the sample pictured in the ...

A: Given , typical grade of pine point ore is 3% pb . 7%  Zn And total weight of the sample = 13.6kg  C...

Q: A solution that has a hydrogen ion concentration equal to 9.61 x 10-7 has a pH =

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Q: Page of 4 4- Calculate the final volume of a sample of gas initially occupying 2.23L at 9°C and 1.72...

A: The combined gas law can be defined as the law which is formed by combination of  three gas laws.-- ...

Q: 3- Calculate the final volume at 302 K of a 5.41 L sample of gas originally at 353 K if the pressure...

A: Given values, V1= 5.41 L , T1= 353 K V2= ? , T2=302 K

Q: The following reaction is first order in N2O5N2O5: N2O5(g)→NO3(g)+NO2(g)N2O5(g)→NO3(g)+NO2(g) The ...

A: What would the rate of the reaction if the reaction were zero order?

Q: Gaseous methane (CH,) reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (Co,) an...

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Q: Mixing which of the following pairs will make a buffer solution? O CsF, HF O KBr, HBr O Nal, HI RBCI...

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Q: A 15.65 gram sample of chromium is heated in the presence of excess fluorine. A metal fluoride is fo...

A: If 15.65 gram sample of chromium is heated in the presence of excess fluorine. A metal fluoride is f...

Q: At the freezing point of water, Kw = 1.2 x 1015, What is the pH of ice water?

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Q: rite the net chemical equation for

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Q: Consider the following half-reactions: Half-reaction E° (V) I2(s) + 2e 21(aq) 0.535V Cu2+(aq) + 2e¯ ...

A: we have given the reduction potential values: 1) higher the reduction potential, the strongest the o...

Q: The concentration of many colorful solutions can be determined by the amount of light absorbed by th...

A: As the absorbance and concentration are in linear equation  then the equation will be y= mx+ C  Wher...

Q: The molar absorptivity of a compound at 500 nm wavelength is 252 M-1cm-1. Suppose one prepares a sol...

A: 1.)  We would use formula of Absorbance.        Note : As you have uploaded two questions, I'll ans...

Q: Ksp of Calcium Hydroxides Lab According to Le Chatelier’s Principle, does the addition of an acid t...

A: Yes after the addition of an HCl the calcium hydroxide will react with the acid and its concentratio...

Q: eaction with respect to each reactant the overall order of the reaction (11) (ii) (iv) (v) (vi) the ...

A: Answer of last 3 sub-parts:

Q: Which compound has the weaker London dispersion forces? Chemical A: Chemical B:

A: To determine which of the given Compound have weaker london dispersion forces. Strongest the intermo...

Q: Which colligative property supports the practice of putting hefty amounts of rock salt and ice outsi...

A:                                Answer Identify which colligative property related rock salt outer si...

Q: A 25.0 mL sample of 1.00 M HCI is titrated with 50.0 ml of 1.00 M NaOH solution. What is the pH of t...

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Q: Arrange the following in order of increasing vapour pressure: Ar, NaClO3, H2O, H2Se. Discuss your ch...

A: The order of increasing vapor pressure will be - - > Ar < H2Se < H2O < NaClO3  

Q: Q1: |The results of a photoelectric experiment comparing two different metals (A ar B) are shown bel...

A: We would use equation of photoelectric effect to determine which metal has greater value of φ.

Q: Half-reaction E° (V) I2(s) + 2e → 21°(aq) 0.535V Cu2+(aq) + 2e¯ → Cu(s) 0.337V Mg2+(aq) + 2e → | Mg(...

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Q: Calculate the percent ionization of HA in a 0.10 M solution. Express your answer to two significant ...

A: Given values-> Concentration of HA = 0.10M Ka = 1.6 × 10^-7    

Q: What is the name of the non-reducing monosaccharide found in the disaccharide shown here? но H. H. Н...

A: Nonreducing disaccharides can be defined as the disaccharides having glycosidic bonds between their ...

Q: Cite two real-life applications of cooling curve and determination of the freezing point of a substa...

A: Applying cooling curves and freezing points to real life: 1. In heavy snow areas,• Salt the roads to...

Q: Phosphoric acid, which is commonly used as rust inhibitor, food additive and etching agent for denta...

A: GIVEN:-