11. A 239.4 mg sample of a drug designed to treat malaria was run through a series of reactions to convert all the nitrogen in the compound into N c The gas collected over water at 23.8°C and a pressure of 755,5 torr
had a volume of 18.66 L. The vapor pressure of water at this temperature is 22.11 torr. Calculate the percent
by mass of nitrogen in the sample
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Which of the following did you identify correctly

Ibelieve the answer is d. bleachhope my answer has you : )

The lewis structure for co2 has a total of  16  valence electrons.  hoped i can i get brainliest

    pb(so₄)₂this element is lead (iv) sulfate. lead is a multivalent ion. but we know that sulfate ions, so₄²⁻, have a charge of -2. in order to have the ratios match up, we need pb⁴⁺ (two times as many pb⁴⁺  than so₄²⁻).the molar mass can be calculated by finding the mass of one mole of this compound. consider the following calculation,  where amu represents the atomic mass unit. the amu for each atom involved in this compound can be found on a periodic table.  molar mass = amu pb + 2(amu s + 4 * amu o)from a periodic table (with masses rounded to the nearest tenth),      amu pb = 207.2 g    amu s =  32.1 g    amu o = 16.0 gtherefore    molar mass =  207.2 + 2(32.1 + 4*16.0) = 399.4 gthe molar mass is therefore 399.4 grams per mol