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A swimming pool is 26.15 yards long and 40.04 feet wide. The pool is filled with water from a hose that has a flow rate of 2.852 gallons/second. How many minutes will it it take to fill the pool to a depth of 4.771 feet?
a saturated solution contains 167 g agclo4 in 30 ml of water in 25 c. what is the solubility in g solute100 g h20?
Calculate the Ksp for Na2B4O5(OH)4 from this data. What is the free energy change for the dissolution of Na2B4O5(OH)4 at 25° C
For the reaction N2O4== 2 NO2 what is the effect of adding NO2 to the reaction vessel A. the reaction will shift to the right B. the reaction will shift to the left C. there will be no further reaction
The spectrum exhibited an absorption band at 260 nm which is attrbutable to benzene, and the absorbance of this band was 0.69. In a reference source, the student found that the molar absorptivity of this benzene band in ethanol
A Solution was analyzed using AA spectroscopy for Au. The signal registered was 150. The sample solution was placed in a 10ml container and spiked with 2ml of a 0.125mM standard Au solution. The spiked solution returned a AA signal of 185. What wa..
How many moles of oxygen are needed to react with 5.0 moles of ammonia? In the above reaction, how many moles of water can be produced from 256 grams of oxygen?
Three common hydrocarbons that contain four carbons are listed here, along with their standard enthalpies of formation
a 10.00-ml sample of vinegar which is an aqueous solution of acetic acid hc2h3o2 is titrated with 0.5062 m naoh and
Calculate the pH at the equivalence point for titrating 0.250 solutions of each of the following bases with 0.250 M HBr
Percent Mass and Stoichiometry, You are the science officer on the Starship Enterprise. The ship is circling a new planet. The away team comes back with some rocks and minerals
Lead metal can be extracted from a mineral called galena, which contains 86.6 % lead by mass. A particular ore contains 68.5 % galena by mass.If the lead can be extracted with 92.5 % efficiency, what mass of ore is required to make a lead sphere w..
Insulin is a protein that is used by the body to regulate both carbohydrate and fat metabolism. A bottle contains 375 of insulin at a concentration of 50.0 . What is the total mass of insulin in the bottle?
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