For this question, we will be figuring out the polarity of solutions made of solid amounts of certain substances. Let's start with the first substance. We want a 250 milliliters. Solution made a 5.6 to 3 grams of NHC. Oh, free Now remember that mill Arat e? They're small over leaders. So we need to find how many leaders we have and how many moles we have. Start with. Moles already have grams. We know grams can convert two moles. Let's do that. We start with our 5.6 to 3 grams of any H CEO through multiply by the molar mass, which we confined by calculating to calculate you just add thesis odium the high shin carbon, the oxygen Matthews together. Now that Mueller mess, we know it is for everyone. Mole, there are 84.7 grips That's going to give us 0.669348 moles of this sodium bicarbonate that's gonna go in this portion over formula for polarities now to find the leaders. Fortunately, we already have our mill leaders. We just have to convert from milliliters into leaders. So 250 mills. I was going to be for everyone later. There are 1000 milliliters. That's our conversion factor and that will be 0.25 zero leaders. No, we're going to plug everything into our M equals Moldova leader formula. So the moles have 0.669348 moles over 0.250 leaders. She's going to have a similarity of 0.2677 molder. Now, this next part wants us to find the polarity of a 500 militar solution made with 184.6 milligrams of K two c r 07 I do want to highlight that This is milligrams and not grams. So we're going out to convert it into grams so it can do milligrams. Two grams, two moles. Okay, so 184.6 milligrams and everyone Graham has 1000 milligrams, cancel other milligrams. And now we see that we have 0.184 six grams of the substance. Now we can convert to mold. So, Moller mess, we have 294 0.1 for five grams and everyone No. Notice how many grams we have here to Philip One mole and here we don't even have a single gram. This is going to be a very small polarity at the end. That's going to give us a value of 0.6 to 7 two and so on, which is about six 0.272 times 10 to the negative. That put in scientific notation. You count back, Skip. 123 fours Faces back. Needed for now. When you defined how many leaders we have, we know we have 500 milliliters. So we know for every leader, we have 1000 milliliters. So this is 0.500. Uh, sorry, leaders. No, we will calculate moles. Over the years, we have our 6.272 times 10 to the negative four moles over 0.5 year their leaders. That's gonna equal very small polarity. It comes out to zero point 001255 which, when you convert to scientific notation, is roughly 1.255 times 10 to the native three. That is our polarity. Now this last bit is different. We need to find similarity of this money. Grams copper, solid copper metal that was dissolved first in 18 03 solution and then diluted with the H 20 Let's start with the grams for since that's pretty standard grams to moles. Okay, so that means we'll do 0.10 to 5 Kreme's couple two plus multiply by the molar Mass. So for everyone mold copter, it is full of 63.55 grams of copper. There's going to give us value of 0.16 12903 A very small number of moles. Now for the volume, we have to do two things. First of all, it's a little leader, so we'll have to convert to leaders. But also there's two volumes because you're are putting the cover metal into the 35 milliliters of H and 03 to dissolve it. Then you take the whole 35 milliliters of the Agent 03 and add it to the 200 milliliters of water. So 200 milliliters plus 35 millimeters with a total of 235 millimeters. So that's our total volume. We're gonna be plugging into the leaders. So now 235 million years quivered until leaders. So for everyone, leader, it's 1000 milliliters. We have a final volume of 0.23 five liters Now to do our final calculation of the polarity. Take our 0.16 to 903 Moles are copper divide by our leaders, which is 0.235 That gives us a small mill. Araji. It will end up being zero point zero for six. Moller. That's our solution.