A stock solution is a solution of a known concentration. Stock solution has a high concentration and therefore, the known amount of stock solution is used for preparing different concentrations, by diluting the same with the known amount of the solvent being used, such as water.
<span>Oct 15, 2016 - You'll have to use the formula to find kinetic energy, E=1/2*m*v^2 the ... input which is 4000 juoles, the mass is 500 kg and the velocity is what ...</span>Kinetic/Potential Energy math problems? | Yahoo Answershttps://answers.yahoo.com/question/index?qid=20090326203307AACcKkz<span>CachedSimilar</span><span>Mar 26, 2009 - You don't have to answer them all, only the one(s) you know. 1. What is the velocity of a 500 kilogram elevator that has 4000 Joules of energy?</span><span>What is the velocity of a 800 kilogram elevator that has 3,560 ...</span>May 19, 2013<span>What is the velocity of an 500 kilogram elevator that has 4000 ...</span>Jan 30, 2013<span>What is the velocity of a 500 kg elevator that has 4,000 J of ...</span>Oct 19, 2011can someone help me with a couple of science/math problems ...Nov 28, 2007More results from answers.yahoo.com<span>[PDF]Ch. 11 Energy and Motion Review - Ms. Stalker</span>msstalker.weebly.com/uploads/3/2/1/1/.../ch.11_study_guide_review_answers.pdf<span>CachedSimilar</span><span>The truck has greater kinetic energy because its ... Energy= joules. Weight= Newton ... What is the velocity of a 500-kg elevator that has 4000 J of energy?</span><span>[DOC]Energy Problems (from combo page) - Midland ISD</span>www.midlandisd.net/cms/lib01/.../Energy%20Problems%20Gallery%20Walk.docCached<span>Determine the amount of potential energy of a 5 N book that is moved to 3 ... What is the velocity of a 500 kg elevator that has 4000 joules of kinetic energy? Ans:.</span>What is the velocity of an 500 kg elevator that has 4000 J of energywww.answers.com › ... › Categories › Science › Units of Measure › Weight and Mass<span>CachedSimilar</span><span>1/2(500kg) • v^2 = 4000J V = √(4000÷250) = 4 m/s. ... 250 kg roller coaster car has 20000 J of potential energy at the top of the hill what is the velocity of the car at the ... KE = 1/2mV^2 300 Joules = 1/2(1500 kg)V^2 multiply through by 2 600 ...</span>What is the velocity of an 500 kg elevator that has 4000 joules of energywww.answers.com › WikiAnswers › Categories › Science<span>CachedSimilar</span><span>500 joules is equal to 368.78 ft-lbf. For example, an object has 500 joules of kinetic energy, when its mass is 10 kg (~22 lbs) and it is traveling at 10 m/s (36 km/h ...</span>What is the velocity of an 500-kilogram elevator that has 4000 joules of ...brainly.com › High School › PhysicsCached<span>Mar 5, 2014 - ... is the velocity of an 500-kilogram elevator that has 4,000 joules of energy? ... Brainly has millions of high quality answers, all of them carefully ...</span>Potential energy and Kinetic energy Flashcards | Quizlethttps://quizlet.com/151831434/potential-energy-and-kinetic-energy-flash-cards/Cached<span>What is the kinetic energy of a 3-kilogram ball that is rolling at 2 meters per ... What is the velocity of an 500-kilogram elevator that has 4,000 joules of energy?</span>Energy Problems Key.pdf - Owen J. Roberts School Districtojrsd.schoolwires.net/site/.../filedownload.ashx?...Energy%20Problems%20Key.pdf<span>A description for this result is not available because of this site's robots.txtLearn more</span><span>[PDF]Gravitational Potential Energy and Motional Kinetic _Enerqv Forms of ...</span>www.mayfieldschools.org/.../Worksheet_MechanicalEnergy_2015_Solutions.pdf<span>CachedSimilar</span><span>measured in joules. ... kilograms) as well as the velocity or speed of that object. .... is the velocityiof a 500-kg elevator that has 4000 J of motional kinetic energy?</span>
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Answer:
Kb = 6.22x10⁻⁷
Explanation:
Triethanolamine, C₆H₁₅O₃N, is in equilibrium with water:
C₆H₁₅O₃N(aq) + H₂O(l) ⇄ C₆H₁₅O₃NH⁺(aq) + OH⁻(aq)
Kb is defined from concentrations in equilibrium, thus:
Kb = [C₆H₁₅O₃NH⁺] [OH⁻] / [C₆H₁₅O₃N]
The equilibrium concentration of these compounds could be written as:
[C₆H₁₅O₃N] = 0.486M - X
[C₆H₁₅O₃NH⁺] = X
[OH⁻] = X
pH is -log [H⁺], thus, [H⁺] = 10^-pH = 1.820x10⁻¹¹M
Also, Kw = [OH⁻] ₓ [H⁺];
1x10⁻¹⁴ = [OH⁻] ₓ [H⁺]
1x10⁻¹⁴ = [OH⁻] ₓ [1.820x10⁻¹¹M]
5.495x10⁻⁴M = [OH⁻], that means <em>X = 5.495x10⁻⁴M</em>
Replacing in Kb formula:
Kb = [5.495x10⁻⁴M] [5.495x10⁻⁴M] / [0.486M-5.495x10⁻⁴M]
<em>Kb = 6.22x10⁻⁷</em>
<em></em>
Answer:
No net change in reaction occurs in this nucleophilic acyl subtitution reaction
Explanation:
Sodium ethoxide in ethanol gives nucleophilic acyl substitution reaction with ethyl-2-methylpropanoate.
Here ethoxide group replaces an ethoxide group from ester through addition-ellimination pathway.
So, ultimately, the product of this reaction is identical with reactant i.e. ethyl-2-methylpropanoate is reproduced.
Hence one might observe no change during reaction as product and reactant of this reaction are same.
Mechanistic pathway has been shown below.
When calcium carbonate is heated, it breaks down to form calcium oxide and carbon dioxide.
Thermal decomposition is the process in which heat is required.
It is also known as thermolysis.
It is processed in which a compound breaks into two or more products when the heat is supplied.
This reaction is used for the production of oxygen.
This reaction is also used for production of acidic as well as basic oxides.
CaCO3 on thermal decomposition gives:
CaCO3→CaO+CO2
CaO→ Basic oxide.
CO2→ Acidic oxide.
