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QuestiOnpainteEntery Our Clcuied 2+3642 he suto nulded~Jth; DiKc415442QuESTION 17oimun joeedromd-J conxenencndol alennenamam OTVroinaticoifo ponc" pala Gy yorlonaclolne00uu/cQueONJpointCtulytnullmynathctu5

questiOn painte Entery Our Clcuied 2+3642 he suto nulded ~Jth; DiKc 415442 QuESTION 17 oimu n joeedromd-J conxenencndol alennenamam OT Vroinati coifo ponc" pala Gy yorlonaclolne 00uu/c QueON Jpoint Ctulyt nullmynathctu5



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licre the ycllow and orangc precipirares arc, rcspectively (a) $\mathrm{Na}_{2} \mathrm{Cr}_{2} \mathrm{O}_{2}, \mathrm{~K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{-}$ (b) $\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}, \mathrm{Na}_{2} \mathrm{Cr}_{2} \mathrm{O}_{2}$ (c) $\mathrm{Na}_{2} \mathrm{CrO}_{4}, \mathrm{~K}_{2} \mathrm{CrO}_{4}$ (d) $\mathrm{Na}_{2} \mathrm{Cr}_{2} \mathrm{O}_{2}, \mathrm{~K}_{2} \mathrm{CrO}_{4}$

In this problem, the yellow solution yellow solution, which age I need to see R 04 on reaction will give us yellow PPT and the yellow PPT here. Age B b CR 04. Therefore, according to the option option C. H, correct answer for this problem, Option C. Each correct answer for this problem, I hope you understand the the action of this problem.

Now in this part we are asked to find out the yellow respect. You'll notice right the sequence of the reactions of the year being N no three or two. This upon hating will produce. Yeah, mm. No, this is a fun reaction were diluted. Well you the the L two. No, we have video on reaction with alimony, um ammonium carbonate, ammonia carbonate. This will produce, he is C. 03 This is uh now this upon reaction will dilute at cl will produce S E L two B S C L two. Upon reaction with potassium promenade this will produce E A R Bs er of or no B S C R. O. For upon reaction with dilute sulfuric acid, it is a source of work. It will produce B. A. S. Awful. So this is Yeah, this is the better answer. E. S. 04 Yeah. So far is there direct And and this is this is the final product. But we're asked to find out the yellow pre speed. So this is the yellow principle. Hello, is it the B A c R 04? P a c R O Forest to Yellow Pre spirits. So let's check out the options. We see. Obscenity is going to Son. He is going to B S c R 04 is uh, yellow precipitate.

In this problem, just look at it carefully. BB I too, will react in pageants of BSE here, too. ECU was to give compound Are we change which aid 80 cl here, which it A d c L. Here? So this is white PPT. They said white PPT. Therefore, according to the option option, age, correct and said for this problem, A d c l a will be the white PPT in this problem.

Today we are adding in subtracting fractions with. Unlike denominators specifically denominators that require factoring because they involve polynomial. These are the two fractions. Is that we are going to be subtracting today. Make sure I get all my signs right now. What I want to start with is this polynomial. I want to factor it. So we will simplify it as q minus four And killed a six. Now if we look over here something fun we can do is distribute the negative one into the bottom here And we get Q -4 whatever you write that so that you can see where I'm going with this. If we really have a Q -4, the only thing we're missing for a common denominator is a Q plus six. So we will go ahead and give it a Q plus six. If we multiply the top and bottom by Q plus six we are given Q squared plus eight. Q plus 12 over are now common denominator of q minus four and Q plus six. We can now simply add enumerators and we get Q squared um minus 13. Q plus eight is going to be minus five Q. And then Yes -5 Q. and yeah my plus nine plus nine sorry plus nine over our common denominator of cuba as far Q-us six. And now we're not quite done. We want to simplify further by factoring the top. You can factor out that top polynomial into Q. See here minus What has to be three. That is for. Can we factored? Actually I'm actually going to go ahead and say I don't think we can yeah I don't think we can't. So scratch that your answer is going to be this factor or this fraction sorry? Right here.


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