![]() I hope you're gonna see where all that came from. So this is all of the Adams president in this molecule. And there were these two oxygen's from the subscript in the parentheses are gonna add to the three oxygen's at the end, we're gonna have five oxygen atoms total, and then we also have our carbon atom at the end there. ![]() Now, we're gonna multiply this two out and this sub script here and we're going to hydrogen. We have copper, two of those, because we on the left, two coppers. We're gonna count out the number of Adams we have in each molecule of each type of Adam in each molecules. So, uh, what we're gonna do is we're gonna break this out. We have O H two of those, and we have C 03 Okay. So let's start already got the common chemical formula here. Now we've been asked to determine the mass percent oxygen present in this compound. So for this problem, we've been given a compound. You probably have solved for percent mass like this before. So nothing too crazy, difficult, Especially if you had chemistry. So we have about ten percent eyes going to be the carbon. But that's going to equal point one zero zero, all right? And so as a hole, right, we moved by that by a hundred to get two percentage on. So again, like I said, you don't have to be one hundred percent accurate here. All right, that's going to add up to equalling twelve point zero one one all over one nineteen point for approximately, um you have more decimal, but approximately four, because again, they they only care about the rounded to the nearest percent. Those on top sets twelve pounds or one, then adding up the masses of of carbon, hydrogen and chlorine. Now, the percentage of carbon right, that's going to be the mass of carbon. Want one? The mass of hydrogen is equaled, tio, one point zero zero eight and chlorine is going to be three times thirty five point for five three. But the master Carver is equal to twelve point zero. Right? And so we have to solve for, um, the mass of everything, the mass of carbon, and we should be able to approximate here, so we don't have to use exact, exact values. All right, which is gonna be a c h c l three now, percentage questions is going to be the in this case, the percent of carbon over the total percentage. Now, this is a situation where we have no Okay, chloroform, His chloral, uh, floral methane. ![]() So question thirty seven assets for what percentage of the massive One more chloroform does carbon makeup frowned? The answer to the whole percentage. No, for Saint by Masab Silva 90s you can to 78.26 positives and it's locked.Īll right. Was sent Bye Mosque of Silver 90 sequel to 78.36 and therefore, Mhm. This is of course brand formal then next one is dash to calculate percent by mass of silver. Civil while its inquiry to 107 86 Okay 82. So we know that atomic mass of the silver carbonate. Person which mass of silver found in a particular mineral that is determined to be silver, carbon image. ![]()
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