Calculate the percent yield of a reaction
Calculate the percent yield of a reaction in which 282 g phosphorus trichloride reacts with excess water to form aqueous phosphorus acid (H3PO3) and 119 g HCl?
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A sample which is having of 70.5mg of potassium phosphate is added to 15.0L of0.050M silver nitrate resulting in the formation of a precipitate.
Determine the number of grams of water were in the sample if a 45g piece of ice at 0^celcius is added to a sample of water at 8^celcius. All of the ice melts and the temperature of the water decreases to 0^celcius.
The combustion of 135mg of a hydrocarbon produces 135mg of H2O and 440mg of CO2. The molar mass of the hydrocarbon is 270 g/mol. Calculate the molecular formula of this compound.
A reaction combines 133.484 g of lead (II) nitrate with 45.010 g of sodium hydroxide. Pb(NO3)2 (aq) + 2NaOH (aq) Pb(OH)2 (s) +2NANO3 (aq)
Try to visualize set of all points (x,y,z) in the coordinate space which are twice as far from pts Q(0,3,0) as from pt P(0,0,0). Utilize Distance formula to illustrate that set is sphere, and determine its center and radius.
Calculate the percent by mass of cuso4 * 5H20 in the mixture when a mixture of cuso4 * 5H2O MgSO4 * 7H2O is heated until all the water is lost if 5.020 g of the mixture gives 2,988 of the anhydrous salts.
Determine the relation between the strength of the acid and the pka of an acid? Calculate the pka. For an acid HA, the concentration of HA and A- are 0.075 and 0.025, respectively, at pH 6.0. Calculate the pkA value for HA?
Solutions of silver nitrate and sodium carbonate react to form solid silver carbonate and a solution of the sodium nitrate. A solution having 3.50 g of sodium carbonate is mixed with one having 5.00 of silver nitrate.
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