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NOz and another unknown compound containing nitrogen and oxygen have the following masses of N that combines with g Oin NOz and the unknown compound:Compoundgrams 0...

Question

NOz and another unknown compound containing nitrogen and oxygen have the following masses of N that combines with g Oin NOz and the unknown compound:Compoundgrams 0 per gramNOz2.28 gUnknown1.14gWhat is the unknown iron and oxygen compound?NzOzNzO5NONO3

NOz and another unknown compound containing nitrogen and oxygen have the following masses of N that combines with g Oin NOz and the unknown compound: Compound grams 0 per gram NOz 2.28 g Unknown 1.14g What is the unknown iron and oxygen compound? NzOz NzO5 NO NO3



Answers

A compound containing nitrogen and oxygen is decomposed in the laboratory and produces $1.78 \mathrm{g}$ of nitrogen and $4.05 \mathrm{g}$ of oxygen. Calculate the empirical formula of the compound.

Starting from 0.213 grams of co two. We can convert this 44.0 grams of co. Two 2 12 grams of carbon because all of our carbon comes from co two. This gives a 0.581 grams of carbon. Therefore, our percent carbon would be equal. Teoh 0.581 grams of carbon divided by the grams of the compounds what, 157 grams times 100% and the percent of carbon works up to 37.0% Carpet. We use that number in a few minutes. Uh, starting from point 0310 grams of hydrogen, all of the hydrogen is present in the water, 18.0 grams of H, 20 2.0 grams of H 20 And this will yield 0.344 grams of the ah hydrogen. So we can calculate a percent of hydrogen which is equal that 0.0 344 grams of hydrogen divided by the 3440.1 by seven grams of the compounds times 100%. And this works out to 2.19% hydrogen. Use that number in a few minutes. Three. Amount of nitrogen present in NH three is zero point 0 to 30 grams of NH, three times 17.0 grams of NH, three in 14.0 grams of nitrogen and this works to be zero point zero one each. Nine grams of nitrogen there, 4% of nitrogen will be 0.189 grams of nitrogen over now. Different compound here 0.103 grams of the compounds times 100% and this works out to 18.3% of nitrogen. So those who are 1st 3 elements that percent of carbon, hydrogen and nitrogen to solve for the percent of oxygen it will be 100% will take the difference. Of all three. Subtract 37.0 percent, which is our percent of carbon subtract 2.19% which is our percent for hydrogen subtract 18.3% said I percent for nitrogen and will find that a percent of oxygen works out to 42.5% oxygen. Using this data, we can come up with the empirical formula and, um, we're going to assume 100 grams of the compounds. And if we assume 100 grams, that means we have 37.0 grams of carbon, 2.19 grams of hydrogen, 18.3 grams of nitrogen and 42.5 grams of oxygen. Convert all of these two moles. This works such a 2.19 moles hydrogen, 1.31 moles of nitrogen and 2.66 mills Oxygen. We're going to divide by the least amount, which is 1.31 Give me one. Here. This works out to this works out to, uh, 1.67 I'm gonna put this as a mixed number was to be 5/3, which is equal to 1.67 and 3.8 Divided by 1.31 Works up to 2.33 which works out to, uh, 2.33 is eat, you know, 7/3 7/3 to get rid of the fractions and give us whole numbers, We're gonna multiply way three to give me seven, five, three and six There for my empirical formula. Taking this whole number ratio over here? Uh, it will be si seven h five and three. 06 So this here is my empirical Formula Four, this compound containing carbon, hydrogen, nitrogen and oxygen.

We're going to determine the compound. They can't. Africa Fund often combines hunting carbon, hydrogen, oxygen and nitrogen. And we're giving, um, the combustion reaction. You have soup on 157 graham, and they would keep off corresponding amounts off we apart that silicio and water and then find experiment. Also keep off that much off. I'm only a okay, Sue from, Ah, our first compassion reaction. We can actually find out, um, number mobile, carbon and hydrogen. And even we've uh huh. But its first staff of ah ah, look, I love one of most. So the number most off our regular convert of mass off 0 to 2 lumber almost, Um, and that we should have Ah, 0.4 for most. And corresponding cabins were also with the same people for each coming down side at one carbon. Okay, so and then we're going to convert that Ah, mass of water to number most again, and we will have syrup on Syria. 0172 And the number more off hydrogen were corresponding to syrup on 00 Uh, for your four foremost. Okay, so we have carbon hydrogen for oxygen. Ah, where you can find later, but ah, we we kind of first final battery. Okay, so from here for, um, digestion We all the night, all of nitrogen, gin, the compound comment you I'm only so we can just file the number of mobile nitrogen from ammonia. So we're super in Syria. Two feet, zero grams. You're by the move. The massive. I'm only a and we will have syrup on 00135 and the level move form. Imagine also that same year they have ah one, naturally each. I'm only a mark. You okay? So we already final? Um but you shouldn't. Okay, the next step is founder all surgery. Ah, we're going back to other compassion reaction because for this statement, which much armored cereals it counting all situation cabin hydrogen and also nitrogen Ah, gifting died the, um, questions. So therefore, we're going to convert a mass about most off cabin to mass. The same for high Strine. So we have serious on sooner. 44 times 12 And there we wish you have 0.581 gram and then also seemed for hydrated. Okay, so four hydrogen, We have soup on Ciro. Um 34 foreground. Okay, so however, um, if you pay attention, you'll find that the limbo more off natural given Here it's from that much of sample. So it's different from Italian. Ah, your sample one. I mean, the reaction one. So therefore ah, get stabbed Using the A celeb. Almost. We're going to look at the mass percentage of nitrogen. Okay, so for this case ah, we can figure convert that Limbaugh warned 19 year Ah, two massive superfans. Seriously. 135 times toe more. The mass off natural chins were soup on Syria one a nine Graham, Korean spawned danger Damascus Stand take. We're going to take you up on Syria. 189 grams divided by the over home mass time When 2% and then we will be find that is ah goes to 80 0.3 percent. Okay, so and go back to our first we ashen the mass of nitrogen eyes corresponding to seal upon 157 times. Um, eight team 80.3. Do you have ah percent percent. So we will have still upon 0 to 87 gram. Okay, So before mass off oxygen, we are going to take total mass A chan all the rest of the mass and the rest of it will be oxygen. So we have a serial poem when five sevens of track suit for civil to 8th 7 So they're super in Super five. Eighth one. Such a soup for Syria. Zero for 344 and then we will have 0.6676 crab. All right, so we're gonna cover back to some bone loss. So full, um, nitrogen, It will be, Ah, serial Ponsero 20 Fife. And then we're going to do that for, um um hostage in. So we're soo upon several. 6676 divided cereal point. Um, civil War. Every we will have Ah, 0.0 for 17 Mol. All right, so we have the numbers here. We just didn't move for the lumber on down to the ah here. So we're going to establish their simple sway show. All right, So, folk cabin, we have soup on zero for four for hydrogen were silver on Ciroc will 344 for all surgeon, We have so ah, for natural. Jim, We were have ah, 0.205 and for oxygen. We have soap on cereal. Cereal for 17 All right, So you're going to simplify the way show. Ah, but dividing the smallest number so you can see the smallest number of civil for Sarah Chul five. So we have soup or cereal for a four and that we have left around 2.36 And there we have of 1.68 have won. And that we have Ah, 417 I remember a few around shoe. All right, so we are going to take, um okay, closest number. We could wind up a run down to the whole number. So we have carbon as to hydrogen to be, ah, to natural beauty. Ah, one And then, um, hostage into we to All right. So we have 2 to 1 to 22 to 1. So the vertical formalism a C two, h two and 02

Of a compound contains only nitrogen and oxygen has a formula massive. 44 point no to then from trial and error. We can identify that there are two nitrogen ins. Each of them are 14 that brings this up too. 28 plus one oxygen 16 more gives us 44 So the formula is and 20

And this question we're going to take a look at some information to help us determine the molecular formula for a substance We're told we have one molecule with this mass and then it's 27.3% carbon. So the first thing we want to do is take that mass of the total compound in its molecule and multiplied by the percentage um Decimal form of 27.3 which is .273. And that tells us that we have 2.0 times 10 to the negative 23 g of carbon out of that sample tells us the rest of it is oxygen. So if we subtract from the total amount, the amount that's just carbon, The remainder must be oxygen. So five 30 waiter will round it to that hundreds. Place 5.31 times 10 to the negative 23 g is oxygen from molecular formulas. We need to determine the number of moles and be able to compare that to ultimately get an answer for the formula. So the next step then is to use the molar mass, first of carbon, 12 g per mole multiply this known mass of two times 10 to the negative 23 g And find out that that represents 1.66 times 10 -24 moles of carbon. Do the same thing with the mass associated with oxygen divided by its um Mueller mass 16 g per mole. And for oxygen we find out we have 3.32 times times when I get to 24 moles and knowing that their exponents are the same, we really can just compare these coefficient values and we can see here that if we divide 3.32 by 1.66, the smaller number, we can maybe even see it as we're looking at it At that 3.32 is two times The amount as one point of 1.66, so this is twice the number of moles of oxygen as carbon. So for every mole one mole of Kerman, We have two moles of oxygen, and so our formula is carbon dioxide.


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