17) An unknown hydrocarbon compound was analyzed for hydrogen by elemental analysis and results show that it contains 15.88 % H. What is the empirical formula? A) C,H, B) CgH18 C) C2H7
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- 5 ml of substance (A) is titrated with 38 ml of 0.1 M of substance (B). if the legal minimum percent of (A) is 4% , Does this sample overrun the minimum limit ? Given the density of (A) = 1 g/ml and M.wt = 61 g/mole.A 0.8250 g of soda ash sample was dissolved in distilled H O and diluted to 250-mL using a volumetric flask. A 50.00 mL aliquot portion of the dilute soda ash solution needed 4.50 mL of 0.1200 M HCl to reach the phenolphthalein end point and 10.00 mL to reach the methyl orange end point. What is the %Na CO (%w/w) present in the soda ash sample? FW Na CO = 105.99 g/mol (Hint: Use dilution factor)11:{0 10 s TE Q3// Calculate the number of grams in 20 ml of KOH that is neutralized with 25.0 mL of standard H,CO,2H,0, which is prepared from 0.315-gram oxalic acid, محمد على 21.03.16 الساعة ص1:43 1