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I have a question about the formula for this problem:How many ways can an IRS auditor select 3 of 11 tax returns for an audit? I know that it is 11! / 3!(113)! But apparently I am doing something wrong because my answer is not
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I have been having a problem with solving a chemistry problem. The problem requires finding the density in copper at 1305K (the temperature changes when you reset the problem). I think I am using the proper formula,
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how many milliter of .246 M HNO3 should be added to 213 ml of 0.00666 M 2,2'bipyridine to give a pH of 4.19? please help, does this problem need to be solved with ka or kb?. Is 2,2' bipyridine a base, this is the problem from my
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A compound is found to be 51.39% carbon, 8.64% hydrogen, and 39.97% nitrogen. It has a molecular molar mass of 140.22 g/mol. (This question requires one to find the empirical formula to end up with the final answer in molecular
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Using the formula for PV (present value) of an oridinary annuity or the amortization formula to solve this problem. PV=13000 I=.03% PMT=500 n=? I have done it over and over and can't it correct
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