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A 15.00ml sample of an acid with unknown molarity is titrated with 15.14ml of a solution of 0.156 Mol NaOH. Calculate the molarity of the unknown acid.
A 1 L flask is filled with 1.45 g of argon at 25 C}. A sample of ethane vapor is added to the same flask until the total pressure is 1.25 atm.what is the partial pressure of argon in the flask?
Element phosphorus occurs as tetratomic molcules P4. what mass of chlorine gas needed to react completely 963 gm of phospheras to form phospheras pentachloride
how many grams of methylamine must be combusted to raise the temperature of 431 g of water from 11.0 degrees Ce to 41.0 degrees C?
The oxalate in the compound was found by KMnO4 titration to constitute 54.81% of its mass. Molar mass of C2O4 is 88.0193 g/mol
What volume of a concentrated { HCl} solution, which is 36.0% { HCl} by mass and has a density of 1.179 {g/mL}, should be used to make 5.30L of an {HCl} solution with a {pH} of 1.7.
what is the spin notation for
What is the percent yield of a reaction in which 258 g phosphorus trichloride reacts with excess water to form 120. g HCl and aqueous phosphorous acid (H3PO3)
what mass of solid sodium formate of mw 68.01 must be added to 140 ml of 0.57 moll formic acid hcooh to make a buffer
If the concentration of mercury in the water of a polluted lake is 0.375 ug (micrograms) per liter of water, what is the total mass of mercury in the lake, in kilograms, if the lake has a surface area of 14.65 square miles and an avery depth of 35..
A brand of lunchmeat contains 0.11% by mass of a preservative, sodium benzoate, C6H5COONa. Health Canada recommends a an upper level intake of Na to be 2300 mg
Assume that the wet limestone process requires 1 metric ton of CaCO3 to remove 90% of the sulfer from 4 metric tons of coel containing 2% S. Assume that the sulfur product is CaSO4. Calculate the percentage of the limestone converted to calcium su..
you are asked to go into the lab and prepare an acetic acid-sodium acetate buffer solution with a ph of 4.40 plusmn
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