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- 1. Which of the following compounds can form hydrogen bonds with water?a. octaneb. HClc. NaCld. acetic acid2. Maria wants to determine the percent water content of an unknown hydrate of AB. Given the following data:mass of empty crucible - 12. 2784gmass of AB · xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. From the above data, give the correct formula for the hydrate. (AB₂ Molar mass = 129.84 g/mol)Anhydrous acetonitrile contains less than 0.001 wt% water. Expressthe water impurity in ppm.Describe the preparation of 750 mL of 5.30 M H3PO4 from the commercial reagent that is 86% H3PO4 (w/w) and has a specific gravity of 1.71. Take ? mL the concentrated reagent and dilute to ? mL with water.
- Prepare 1500mL of 0.5N H2SO4 solution with specific gravity of 1.84g/mL and assay of 97%What is the final concentration of hydrocortisone in the mixture, as a ratio strength, if 5 g of hydrocortisone 2.5 % (w/w) ointment is added to 75 g of petroleum jelly? Round denominator of ratio strength to a whole numberDinitrobiphenyl oxide 0.7 g how much it's mol? Mw of di nitrobiphenyl oxide= ?