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The volume of the solution in- milliliters? TES 0.440 M solution what walcrLf 8.92 g of CuNOs dissohedvolunie:...

Question

The volume of the solution in- milliliters? TES 0.440 M solution what walcrLf 8.92 g of CuNOs dissohedvolunie:

the volume of the solution in- milliliters? TES 0.440 M solution what walcr Lf 8.92 g of CuNOs dissohed volunie:



Answers

What is the molarity of a solution that contains $0.978 \mathrm{~g}$ of $\mathrm{H}_{3} \mathrm{PO}_{4}$ in $185 \mathrm{~mL}$ of solution? How many milliliters of this solution could be completely neutralized by $11.58 \mathrm{~mL}$ of $0.454 \mathrm{M} \mathrm{NaOH}$ ?

For question 10 night. First we had to Congo late, the more off zinc and we put the equation. We fighter more radio on. Don't forget us if it okay. And now we write the equation. Zing React with sodium couple. So face produce his in Sofia because it is they about the couple in the Serie activity of metal. So I got a couple here and now the radio is a 11 And I have boy 1 to 1. Mom, this super descent body one, Do you? Ah, ma, right. And because when we have the concentration off the couple Sufi ego, we know the concentration of couple safari. And when a monk up our so far we can calculate the volume of couple. So far. How can we do I have here Harmony, boy 15 sit and write there. And now the couple so far more mozzie and kind. So kinds of more zing. That mark couple so far. And we divided by one fice it and we will have boy 776 later and we come back to immediately that we have boy 776 new. Okay,

Ah, chemist has 300 milliliters of solution. That is 18% asset. How many milliliters of acid are in the solution? So this is like asking you what is 18% of 300 So using the proportion, I'm looking for the part. So a divided by the whole which is 300 is going to equal the percent 18 divided by 100. So, using the proportions, property 100 a will be 18 times 300. And that means 100 a is 18 times 300 iss 5400. So a is going to be when they divide by 100 54. So 54 milliliters is the answer.

Figure out how many leaders are required in order to have the 86 grams of potassium hydroxide. We'll start with the 86 grams of potassium hydroxide and then convert the grams potassium hydroxide to milliliters of solution. Knowing that is 12% mass volume, meaning for every 12 grams of potassium hydroxide. We have 100 milliliters of solution willing get milliliters of solution which we can convert toe Leaders of solution and 86 grams of potassium hydroxide are found in 860.717 Leaders of solution.

This is an interesting question where there's a little of working through, and so what we have is we have a concentration oven HCL solution, but it's not given to us directly. It's given us by percent mass, and so we're gonna have to do some work to get into malaria. And then also we have. We're told that we're trying to make a five leader solution of HCL. Uh, that is has a pH. Equal to 1.8. And so, knowing that HCL associates 100% we're really just trying to figure out how many moles of H trio plus do we need that relates to this ph of 1.8. And then how much of this solution would you need to get that amount of holes? And so let's work through this. Remember, the concentration of age 30 plus is, by definition tense, the negative pH. So 10 to the negative 1.8 and that of is equal to 0.158 moles per liter, milady. Now we're not. So if this is 0.158 moles for everyone Leader, we want to figure out how many moles were in a once for five leaders. So we want axe malls in five leaders because that's were looking for a five litre solution. So, really, which multiply this value by five and we're gonna find that we're need 50.7924 moles of H 30 plus, which is the same thing is saying HDL were you got amount of moles of hcl. So you get that. Well, we need to We need to do some hard to figure out the percent mass of agency out. So I'll do this. Let's just assume we have one leader of solution and we're told of the density. Here is 1.179 grams for everyone, Militar. Now, if I want these units to cancel, I'm gonna have to get going to cancel this leaders and the leaders. So where did you remember 1000 milliliters equals one leader? And so take a look. What happens here? The mill leaders units, cancel out the leader units, cancel out and we're going to get the number of grams, uh, of solution in one leader. So we have 10.36 grams of solution apartment apartment. I am not sure. Just incorrect. Um, yeah, it's very obviously incorrect. Um, we have 1001 to 79 grand solution. Now that 0.36 comes from the fact that only 36% of that masses HCL and that's what we're really looking for. And so we're in multiplied by 0.36 And that's going to give us 424.44 grands of HCL for implicitly because I said, Let's assume we have one leader for everyone. Leader of solution we have. We have four points for 24.44 grams. Now we have a grants for leader, uh, situation. But we want to turn this into moles per liter, soap or intake 4 to 4.44 grams and we're going to divide by molecular weight, which is 36.46 grams per mole. The grams units cancel out and we find that we have 11.64 moles in every one liter of solution, which to say 11.64 comes as a concentration eso. Now we remember how money moves. We we want it. We want this amount of moles and so 0.792 formals. We're going to say so we know we have these. A lot of holes were looking for the amount of leaders ex leaders here where we have in our solution 11.64 moles and everyone leader. And so now we set up this ratio here and we can solve for X, which gives us that X is equal 2.68 leaders, and that's


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