how-much-energy-is-required-to-raise-the-temperature-of-50-g-of-methanol-from-20circ-mathrmc-to-70ci

Name: how much energy is required to raise the temperature of 50 g of methanol from 20circ mathrmc to 70ci
Uploaded: 2020-10-18
Duration: 1 min 45 s
Channel: Numerade
Description: How much energy is required to raise the temperature of 50 g of methanol from $20^{\circ} \mathrm{C}$ to $70^{\circ} \mathrm{C} ?$

Question

How much energy is required to raise the temperature of 50 g of methanol from $20^{\circ} \mathrm{C}$ to $70^{\circ} \mathrm{C} ?$

David Collins · Accepted Answer

to answer. Question number six. We simply need to know the heat equation que will be equal to the specific heat of the substance multiplied by the mass of the substance multiplied by the change in temperature. And the change in temperature is T final minus T initial. So if we have something like methanol, then we can go to the table on Page 501 and look at the specific heat of methanol, and we see that the specific heat of methanol is not there. But if we look at the problem just below it, they use the specific heat of methanol as 0.58 calories per gram degrees Celsius. So that&#x27;s what we&#x27;ll use, and you&#x27;ll notice that it is very similar to a compound that is also similar to methanol. Ethanol 0.57 But we&#x27;ll use 0.58 so we have que then being equal to the mass of methanol. Well specific heat of methanol. Zero point 58 calories program degree Celsius multiplied by its mass 50 g multiplied by its change in temperature. Final temperature. 70 degrees Celsius. Minus initial temperature. 20 degrees Celsius. This gives us the heat value of 1450 calories

Salamat Ali · Answer

the energy required for 40 grounds off ice Cube to change is given by Q is equal to your Abbas times the specifications off ice times Delta T changing temperature reaches from zero minus here minus 10 10 plus latent heat of effusion Left. Plus, we have is especially key toe for water times the change in temperature, which is from 0 to 100. So destroyed 100 here plus the Latin Tito for improvisation year plus the specific it off the 16 lose s for steam times the change in temperature we hear from, um 110 from 100 to 110. So this will be yeah, 110 minus 100 then. Oh, substituting the values for buses and special Keats, we have here 0.0 for, uh oh times here for ice to 90 times the Here we have 10. Ah, plus, we have Ah, left is 3.3 times 10 to the power of five into the power five. Here. This is times plus We have is specifications off water reaches of 4186 times 100 Then we have left and heat off position, which we have is a 2.62 point $26 2.26 times 10 to the power six here and plus for esteem right here. Plus especially for steam, is 2.262 point +26 times 10 to the power of six. Um Ah, plus plus, we have for steam after here, which is special. It is to +10 times 10. This is actually specific. Eat Also the Latin Tito for position. So of simplifying this we get the energy required to change. The Ice Cube is 1.2. I&#x27;m staying to the power five jewels spent about five chins.

Yaqub Khan · Answer

thermal energy needed toe convert water industry team at 100 degrees Celsius can be calculated by using the division thermal energy equal toe messa water into a little heat off position. So here Messa water is zero point one Miracle ground indoor. Let it hit over. Position for water is no. One 256 times attended a power six jewell but it ground This gives us terrible energy needed equal to do you want 56 Diane extended a bar five. You&#x27;re now the second part We want to convert Liquored it on old indoor It&#x27;s on a river. So by using the relation carbon energy equal toe mass in tow A little hater over position. So here mess up a tunnel is 0.10 kilograms in tow, letting it over position for Donnelly&#x27;s zero point air 37 Time attended a power six, Joel, but I&#x27;m gonna get on this Gives us Tara not equal to 0.837 times gender, edible or fire. Do you

Ahmed Ali · Answer

Hello, everyone. My name is Ali. In this question we have you know, which is the is normal that has the molecular formula C s history, ch teau edge and the more legal await equal 46 gram beer moon is this If among was a member at temperature nine destry sleaziest it&#x27;s a liberal and we want to calculate the amount off heat released when its temperature decrease to negative 10 laziest. So to convert it from my industry toe negative tenseness is and here is liquid, so it must wants fraud. Three step. The first step is the river is lowering toe the ah pointing to a point which is appointing good point. Here is 78.3 c Lazier&#x27;s and this still river then at system preacher it convert toe the liquid because at system Richards there is equilibrium between the vapor and liquid. Then it decreased toe negative 10. So the cooling process is on spike you on to you toe and the q three. So to accompany the queue to dole which by black so it will be equal to you one last you two, plus the value off Q three you want is for Ethel on We need vapor Que Toe is equilibrium Q. Three. It isn&#x27;t all when it&#x27;s liquid so we we can create. First is a Cuban king room for a Veber in the mass off its normal times by specific heat capacity. Times boy change in temperature so it will be equal. 25 Grand Pines Point. The Muller hit capacity is 65.5 for the vapor, and here is this Value is full, more heat. So we must divide eight points more legal weight off Jason on which is 46 times by the change in temperature, which is 78 points. Really negative toe moment history. So the total results will be negative 5 to 4 point who. Nine and the second. This tape with churches there is equilibrium sort will be in Delta H and years adult, which is condensation. So it will be negative. Build the age vaporize ation so it will be negative. Their weight off seasonal 25 its molecular weight is 46 which is a number off more timespan. Delta H of liberalisation is equal 38.5 secs, which is usual. So we time in on Tim Power three to convert. Eight to shoot, so, as a result, will be negative to the room. 956.52 June and at the service state, which, if used three, it will be equal the mass times by specific heat capacity. But here&#x27;s this time for the liquid ties. Voice change in temperature so it will be equal that mass is equal to in define and the specific it. We have the value off more heat, which is one long 2.3 so divine in by the molecular way off F inal toe converted toe, the specific it times by the change in temperature, which is negative. 10. Negative 78.3 and the result will be negative. Sorry, and the result would be negative for X 389 Boy in tow. Born 8 June So now we can calculate the total Q, which either Q one plus Q two plus Q three. So it will be equal Negative toe 68 69.8 jewels so it will be negative toe six point a seven kilo June So this is the he and the negative sign is mean that the A moment. Oh, realized the so negative Aries amount of it relies is will equal 26.87 kilo Jewell. Thank you.

Vipender Yadav · Answer

here. In this problem, we have to find that how much energy is required to convert or recruited the change. 40 gram off ice. We can write that mass off Isis given us for Tikaram if it converted into cages, will get 0.4 k g photo Condor this graham off ice, which is at 10 degrees eldest Initial temperature is given a minus 10 degrees Celsius on were converted to steam at 100 pending results. Use that procedural for is that first of all, we can work minus 10 degrees Celsius. It&#x27;s ice to zero degrees. Lt&#x27;s ice, then zero Celsius ice will be converted to zero degrees Celsius photo and then we&#x27;ll go to 100 degrees Celsius photo and then we&#x27;ll go 200 degrees Celsius ice. Er, sorry vapor. And then finally, 100 degrees, I&#x27;ll just steam. This is a proceeding, one to follow. So to convert, let this year&#x27;s the first process. Let this second process toward process fourth process and first process, so for the first process will lead sensible heat, hair of late, sensible heat on a hair of allayed, latent it on later, new diffusion on here again sensible. Eat here again later. And it. But here it will be later. Newt off vaporization. And here again, sensible heat. So the latent heat off fusion for ice it is equal to 3.33 times tended of our five Jewell perky gee on the leader, Newt Off reparation is L V Is it called stood 2.26 entered ended of our six Jewell package e so he irritable because took you It&#x27;s mass. First of all, we&#x27;ll write the heat for the first process. That means the moss James Doe. It&#x27;s your doctor Norvir. So times the specifications off ice that is C I in total dirty at the change in temperature, change in temperature is standing. Result is so we can direct light and degree. Bless the leading hit times. The mosque means m times. Elif, Bless Off the third process, we laid mass off water times the specifications off water times are changing them bridges. So had genital prejudice. 100 result is bless mass times a little dude off a vapor. This must dames the specific heat off steam that is CS times the change in temperature. So here, genuine, incredulous 10 degree senses. Now we can look like a level is mastery. No, it&#x27;s 0.4 k g times the specific aid offer. Ice. We know it. 2090 Jewell Package E degree. Celsius Times A changing Jim Bridger We already know that it&#x27;s 10. Bless. Moss is 0.4 k g times. A little nude off fusion is 3.33 entered under the bar Fife Jewell Package E Times Change in temperature is no middle right because it&#x27;s basically m dot LF so, in order to write, bless em. Here is 0.4 k g times CW that when the specific heat off water is for 186 Jewell package E. Bigley tells us on the change in Ambridge Aries. Contradict results Use Bless. Next, we&#x27;ll have to write this. That means Mass is 0.4 k g and a little bit off vapor is 2.26 times into the power. Six. Jewell Packaging Calvin So Julia Cage only not Calvin. Bless masses 0.4 See, it&#x27;s a specific it off seem that is 2010 Jewell packages degree Celsius. Dame&#x27;s Virginia dim region that it&#x27;s been so going toe at all the storm and finally will get that will be equals two one point Toto, enter 10 to the power five in Julie. This is called Q. So finally we can conclude that amount of heat and needed will be equals to 1.22 times tended about five jewels, so there&#x27;s a final fancy.

David Collins · Answer

this question to calculate the amount of energy required to raise 100 grams of water from 30 degrees Celsius to 100 degrees Celsius. We can use the equation given in the textbook Que which is the heat is equal to end, which is the malls multiplied by the molar heat capacity CP. Well played by the change in temperature. The moles of water that correspond to 100 grams of water can be calculated by taking 100 grams of water, dividing it by its more mass to give us, in this case 5.549 bowls of water. Now, knowing the moles of water, we can calculate cube que will be equal to 5.549 moles h 20 multiplied by C p, which we could look up in the textbook. We need to make sure that we&#x27;re using the correct Mueller heat capacity for in this case, liquid water because it&#x27;s liquid water. We&#x27;re warming up 75 0.3 Jules huh, Mole degrees Celsius. Well, then multiply by the change in temperature, which will be the final temperature minus the initial temperature. And that gives us three on with 70 changing temperature to 9 to 50 Jewell, which one converted to kill a jewels, would be 29 point 25 killing jewels.

Problem

If you place 20 g of aluminum and 20 $\mathrm{g}$…

Problem 6 Easy Difficulty

How much energy is required to raise the temperature of 50 g of methanol from $20^{\circ} \mathrm{C}$ to $70^{\circ} \mathrm{C} ?$

Answer

1450 $\mathrm{cal}$

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