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A 4.08g sample of a compound contains 3.02g of oxygen. What is the empirical formula?
What is the [OH-] of a buffer that consists of 0.700 M methylamine CH3NH2 and 0.848 M methylammonium chloride CH3NH3Cl? pKb of methylamine is 3.35. Use E notation and 3 significant figures.
what is the main purpose of scratching beakers wall during the synthesis of the
A volume of 60.0mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the KOH solution if 24.7mL of 1.50 M H2SO4 was needed?
what is the ph of a solution formed when 100 ml of a base with ph off 13 is diluted to 1 liter with pure water?
Can someone please show me a mechanism for a Diels-Alder Green Organic Phototchemistry reaction mechanism? We used 9-(hydroxymethyl) anthracene, deionized water, and N-methylmaleimide as the reagents and allowed to solution to reflux.
0.50 of hydrogen chloride () is dissolved in water to make 5.5 of solution. What is the of the resulting hydrochloric acid solution?
the pressure is measured as 8.75 atm. Which of these three gases below could be in the container and why? 1) Ar, 2)Co2, 3)HCl
What is the net ionic equation of the reaction of \rm ZnCl_2 with \rm NaOH
One can approximate boiling point at reduced pressure using a pressure-temperature nomograph. What would you expect the observed boiling pint to be at 50 torr(mm) for a liquid that has a boiling point
If 15 g of sugar are dissolved in 200 g of water, which of the following terms describes the sugar? A. solvent B. solute C. suspension D. colloid
calculate the number of moles of He gas is present in a 1500ml balloon at a pressure of 640 torr and temperature of 25 degrees Celsius?
create a data table to record your data from the procedure. be sure that the data table is neat and organized and that
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