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The mole fraction of chromium(I) nitrate. Cr(NO3): In an aqueous solution is 8.49x10-2 The percent by mass of chromium(Il) nitrate in the solution isSubmit AnswerRe...

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The mole fraction of chromium(I) nitrate. Cr(NO3): In an aqueous solution is 8.49x10-2 The percent by mass of chromium(Il) nitrate in the solution isSubmit AnswerRetry Entire Groupmore group attempts remaining

The mole fraction of chromium(I) nitrate. Cr(NO3): In an aqueous solution is 8.49x10-2 The percent by mass of chromium(Il) nitrate in the solution is Submit Answer Retry Entire Group more group attempts remaining



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12.22 The mole fraction of copper(II) nitrate in an aqueous copper(II) nitrate solution is $0.135 .$ What is the molality of the copper(II) nitrate solution? a.$7.49 m$ b.$8.01 \mathrm{~m}$ c.$8.66 m \quad$ d $9.34 m$ d.$8.09 \mathrm{~m}$

Question. Number 34 is also a percent concentration by mass calculation percent. Concentration by mass is defined as the mass of the salute, divided by the total mass of the solution multiplied by 100. So to calculate the concentration percentage by mass for a solution that contains 20.2 g of solution and 2.46 g of the salute, calcium nitrate will take the mass of the salute calcium nitrate divided by the total mass of the solution, which was provided at 20.2 g. Multiply that by 100 and we get a mass percent or concentration percent by mass of 12.2% calcium nitrate.

Good day. In this question, we are asked to know the percent purity of such a nitrate in the Imperial Sergeant nitrate compound. So first we will need to balance the equation. We are given that soldier nitrate will produce sodium nitrite and oxygen gus. So balancing the equation, We need to balance the oxygen 1st. So in the product we have four oxygen's and interact that we have three. So we will we will try to add through here. By the way, balancing the equation, we will need to do it in a trial and error and we need to have a balanced equation in order to know the relationship between the reluctance and the products. So let's try This three times 2 is six oxygen in the reactors. So in the product we still have to blessed ways for since we are the two here and the Sergeant becomes two, we need to adhere to. So the total of oxygen is six. For the surgery we have to interact tense and two in the products. So nitrogen. It's also too, and nitrogen in the product is too. So this is our balanced equation. Now, using this balance equation, we will know the relationship between the sodium nitrate and sodium nitrite. Now we are given the mass of sodium nitrate. The massive Sergeant nitrite will help us find the mass of the you are sergeant nitrate. At first we will need to have to know the mother mass of age. So mother mass and sergeant nitrate is So Jim has 23 g per mole. Last nitrogen is 14 g per mole plus three oxygen's 16 g. Fair warning. So this will give us 85 g per mole. No muller mash. Um serge, um nitride we have So Joe is 23 ground square mold. This 14 g per mole 14 nitrogen plus two of the oxygen Smalling mass. So the total mass smaller mass is 69 grams per mole. Now that we have the mother masses of the two. We can now start calculating the mall of the sergeant nitrate for us. Yes, based from the must that we are given so more. Yeah. Of sodium nitrite. Yes, if we will into its mass over Mueller mass. The mass is given in the problem in two .2864g, Divided by 69 g per mole. The mole of sergeant nitrate Each equivalent to 4.15. 1 Times 10 to the negative. three more. No, we use the relationship of sergeant nitrate and sergeant nitrite in the balance. A great show. So from that we can solve the most of sodium nitrate all of. So jim nitrate is equivalent to 4.151 to stand to the relative three moles. Sergeant, I tried and according to our balance equation, one mole. Um Sergeant night, right I two moles of sergeant nitric is also two moles of soldier. My trade so Solvay we can get the most of Sergeant nitrate us Also 4.151 Time standard and negative three more. Now, given the mole that we have calculate and we can now find the mass of the pure, So June 9 3. So the bus of sodium nitrate is equal to its mobile times it's smaller muss. So our model is 4.15 foil times 10 to the negative three moles Multiplied by 85 g per mole. So Solvay aware mass is point 35-8 g of fewer. Sergent nitrate. But we are asked to solve for the percent purity so percent period E of sodium nitrate is equal to mas of pure sodium nitrate over the mass of impure Sergeant nitrate that is given in the product. In the problem I mean, times 100%. So the mass that we have calculated his .35-8 g divided by the given. And the problem is .4-30 g Times 100%. No, the percent purity is 83 0.40 first sent. Thank you.

No, we actually, that's, um zero punch points with residual Grandma Pierce city of nitrate with kiss any on three Sally Waas needed and I produced of young nitrites and hold achy and oxygen gas. So we want to determine the percent off. Sodium nitrite in the origin are so they want to determine the percent of sodium nitrate and you're getting a sample. So we, he said, zero point for two. We'll haunt you. There is zero ground off sodium nitrate, and it's produced little point. Shoot hates 64 grams well sodium nitrite on outside you. So first we just need to balance this chemical in question and put you out of Aki and put you back here your spotless. You wanted the time in the percent of city of nitrates in the in the original sample which disappear. So what we're gonna do is to the time in the more than Marcie's off each of this conference and I'll write that in red on top of him. So sodium Miss China, three loss nitrogenous 14 loss. Oxygen is 16 3 off. What do you hate now? You must 85 grams more then, uh, these will be 69. Yeah. Spend more. So what we're gonna do is to, um the time in the amounts off the PR city of nitrate operatives. They want you ate six programs. Okay, so we noticed, like you, medically, that to most obviously produced are two more some days. So we have there a point to 64 grams of these be produced. What? Mass off? This would be consumed. You can call this X. You know, if across much apply you live in this sub 0.4 to 0 house, so we don't deal with it. So that means that hex would be lost. You zero points you 64 grams. Much of life I choose much applied by 85 grams more, divided by two What? Bye bye. 66 9 grams for no. So if you do that said I'll be on to a 64964 times, two times you defy, do you? James said Alvi 0.352 It grabs. So that is the amount off PR sodium nitrates that will previous went to a six program off sodium nitrite. So then we can determine the percent sodium nitrates and, uh, their sample and L B 0.5 to 8 grounds divided by 4 to 30 grounds. Much of life 100 per cent and Allah be close to you. It's a 3.4 saints.

We have. Ah, sirrah. Point for 23 gram off in pure sodium nitrate. So we're going to heat a mixture to cover, um, others of united trade to a sodium nitrate. So, between any yellow to with Austrian, how do you find that we have cereal point, You age 64 given. So what would be the percentage of sodium nitrate in the original sample? Okay, so first of all, we re just up to find now. They're always, you know, among off sodium nitrate. Any and it was we and that we can find out the percent age by mass. All right, so from here Ah, First of all, we should bonds to Camco Brasher for the decomposition reaction. So we have on the end off we and then we know what you and old took. So first of all, when we look at that at ah, um, night of sodium and nitrogen, they all violence here, so it finds its OK, but no for the hostages. They're on the right. We were half for oxygen on Larry. Only have four. Okay, so therefore we are going Teoh, um that no 1/2 off inventor oxygen to bonds death. But if you don't know when have you also can? Might like the whole thing by two. And then you still have the band's Camco reaction having for for this case among of oxygen doesn't every mirrors. All right, so that style we have our the mass off hours of the night rates so and I t t r a i t which means little to And then I want you. So the number mostly vehicles to our maciver point to a 64 divided by ah, the mass off So the eni Enel to so so the army silver favorite 23 we have when? Ah, trivial when us ah to oxygen. And then we should be able to find it. Ah! Limbo Moyes River rounds four Poem 151 time 10 to power in if we smoke. All right, So, um, from here we can see that the motorway show between sodium nitrate any and all free and any and two it's 1 to 1 So there for the lumber of mold Oh, ah, sodium nitrate is also Samos. Ah, that's off a Saudi on then. Oh, too. All right. So we just convert that to Mass. So we're going to have ah, Dumbo most time with a mass. So we have one. So the young one nitrogen. But if we Gostigian and we ah find as equals 0.35 28 grams. Okay, So the percent age, uh, a mass percentage off there because too, um, syrup on 35 to 8. Develop eyes, Cyril point for two or 30 times when you're first and we should be able to find as river. About 80 3.4 through percent has the master Sandy


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