5

6*21 v WhatsappAnsiwer of 1kJ 7 {8+7 0 62f+0.5 ) 7/ 7.(-0.#n 421 5 v 6< 244i0J Gteltutm sbnsvicl G> 04 ~ 00) = 0.2 320 *0, (-2) (*) 0.7 27n& 3o' ({-...

Question

6*21 v WhatsappAnsiwer of 1kJ 7 {8+7 0 62f+0.5 ) 7/ 7.(-0.#n 421 5 v 6< 244i0J Gteltutm sbnsvicl G> 04 ~ 00) = 0.2 320 *0, (-2) (*) 0.7 27n& 3o' ({-96 N tent~#a atctlehm x6kc 6n J0- fNY 26v, + 6v 0= 0 4 ~O-| 0} (0.2) (-0-1) 0.04 txrstA Fve 1ef 3.0 (-0-04) --I2 N

6*21 v Whatsapp Ansiwer of 1 kJ 7 {8+7 0 62f+0.5 ) 7/ 7.(-0.#n 421 5 v 6< 244i0J Gteltutm sbnsvicl G> 04 ~ 00) = 0.2 320 *0, (-2) (*) 0.7 2 7n& 3o' ( {-96 N tent~#a atctlehm x6kc 6n J0- fNY 26v, + 6v 0= 0 4 ~O-| 0} (0.2) (-0-1) 0.04 txrstA Fve 1ef 3.0 (-0-04) --I2 N



Answers

Calculate $\Delta G^{0}$ at $298 \mathrm{~K}$ for the reaction: $\mathrm{P}_{4} \mathrm{O}_{10}(\mathrm{~s})+6 \mathrm{H}_{2} \mathrm{O}(\ell) \longrightarrow 4 \mathrm{H}_{3} \mathrm{PO}_{4}(\mathrm{~s})$ $\begin{array}{lccc}\Delta H_{\mathrm{f}}^{0}, \mathrm{~kJ} / \mathrm{mol}: & -2984 & -285.8 & -1281 \\ S^{0}, \mathrm{~J} / \mathrm{mol} \cdot \mathrm{K}: & 228.9 & 69.91 & 110.5\end{array}$

In this problem, I can write DDX in S three minus plus B i three plus changes into Beihai multiplication food to end to the power minus to change it into two and not plus 40 minus multiplication three. Also, I can write the value of any. The call to pool B minus. The value of Dell G note is equal to minus tool multiplication 96500 multiplication 965000.55, which is equal to minus 637 L. A. Jewel, but more according to the option. Option A is correct of some age, correct and said for this problem.

What? Hello. Hope you're doing well, So we're given these two vectors U and V and were asked to find you cross the So let's review real quick what the cross product is so across product of two vectors will give you another vector. Let's say that let's call that vector W and that vector w that you get will be orthogonal to both through u and V vectors. So essentially, it would be perpendicular to both your u and V vectors. Just kind of draw that out. So let's draw vector you in, um, in the plane of the screen and then vector V is also in the plane of the screen. So the way you find the direction of the cross product er w vectors you point your fingers in the direction of the U vector and then your thumb is just pointing, like up like perpendicular to the, uh, direction the ugh factor. Um, so your fingers are pointing in the direction of the event factor. You curl them towards the direction of the V vector, and your thumb will be pointing in the direction of the W vector of the cross product. So in this case, will be pointing out of the screen. So that's your direction. Using the right hand roll. That's the direction of the cross product. And as you can see, that's both perpendicular orthogonal to both your U and V factors. So now let's go and dive into our problem first. Before you graph the cross product. Let's I changed our U and V vectors into bracketed for just to make it easier toe enter into the online graph. So are you vector or components? Six RJ components minus five and are key components one and V. R. I. Component is one half of the 0.5 RJ component is minus 3/4 or minus 0.75 market components to tents or point to. All right, so now that we've got this, let's go and go to our online three D graphic calculator and find the cross product. Just go to the graphing calculator. The, uh, delete these. All right, Sorry. You vector is going to be equal to six minus five wine, then RV vector. It's going to be equal to 0.5 minus minus 0.75 and zero point right and then r W vector should be equal to the cross product of these two tells us that are resulting vector is minus 0.25 minus 0.7 minus two. In other words, minus 1/4 minus 7/10 minus two. So let's go and write that down. So we ended up with you. Cross the is equal to minus 1/4 minus 7/10 minus two. We can also write it in terms of the unit vectors. I j in case that's equal toe minus 1/4. I minus seven. 10th. J minus two. Okay, Neither one of these two forms is correct for this cross product. All right, so this is our final answer right here for this problem. All right. Well, thanks. And I hope that helps.

Problem. 67 says to rationalize the lattice energy values of each of these four compounds and discuss why they make sense relative to each other. So once we've discussed in previous problems, um, two aspects of an ionic compound that makes them relatively x author, Miss X if emmerich and regard to lattice energy our, um, e a charge on the ions and the size of the ions so hire charge usually leads to a more x a thermic Gladys energy. And a smaller size also leads to a higher, um, Gladys Energy. So in this case, um, first of all, it makes sense that, uh, the compounds containing calcium have a more x a thermic ah lattice energy, because calcium has a positive to charge and selenium and Tillery, um, have a negative to charge. This is a comparison to sodium, which has a positive one charge. So for each of these compounds, the higher charge on calcium leads toothy kind, greater lattice energy. Um, and then, with respect, thio um, the compounds containing selenium versus terrarium um uh, selenium iss smaller, then delirium. And in general, like I said, smaller ions tend to have larger lattice energy because two ions can, um can basically get closer together, and their attraction is much higher. So for that reason, it also makes sense that the lattice energy on compounds containing selenium versus Hillary um is higher. Um, And so in that case, um, it does make sense that the order of lattice energy is that calcium, um bound to selenium is the highest because it has the largest charge and the smallest ions, followed by calcium pounded Towler M and then sodium in that order.

Okay. Today. Everywhere. Questioning, going 12 which talks about and just your doctor. Jeez. And you're talking. You're you're kicking. So you have to an old gas groups to an old gas plus oxygen gas to give you to, you know, to yes, or your adult 30 is equal to negative 69.7 killing jewels. Then you reverse your second equation. So you have two and no plus two natural, don't you? Yeah. Yeah. Two and 20 I said gas. And since he reversed today, you change the sign. So instead of negative 33 pointy, it will be positive. 33 points, then your last equation. You reverse as well. So then you have to and Oh, guys, building. Can we live, Micah? The guts. Oh, and to to So your hands Cancel your oxygen, cancel out. And then for your dog took Gene there. Yes, negative. 1 73. Oh, 0.2 can improves. He was supposed to be a two. Yeah, 12 And then you find out this is to we're in 0.1 killing tools. And then when you do a calculation or 60 gas is yoking um too old. Choose on to and too old, but you need to have three. So do you remember, too? To get your three, you know, gas yielding, you know, to close. And 20 yeah, less and 20 and then that means you have to divide your you know, Turgeon house because you're divided here, equation and health. So then your race with more room. Oh, you get your goal to do mhm is gonna be one or 4.55 killing jewels. It's negative. Yeah. Then during the question, you get negative. Negative one or 4.5. Fine. Divided by 8.314 times 10 to the minus, three times seven. Should be three, which is 84 to 16.27 on your KP is you go to E to the 16.27 which is 1.16 times tend to the seven mhm


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