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A certain second-order reaction (B---products) has a rate constant of 1.00×10-3 M-1*s-1 at 27 C and an initial half-life of 294 s . What is the concentration of the reactant B after one half-life?
The speed of sound in air is 344 m/s at room temperature. The lowest frequency of a large organ pipe is 30 s^-1 and the highest frequency of a piccolo is 1.5*10^4 s^-1
a solution is prepared by dissolving 285 g of sucrose c12h22o11 in 624 g of water. what is the vapor pressure of this
The specific gravity of iron is 7.87, and the density of water at 4.00 degree celcisus is 1.00 g/cm3 . You can use this information to find the density of iron. Find the volume occupied by 5.50 g of iron.
Predict whether zinc and silver react with 1 M sulphuric acid to give out hydrogen or not. Given that the standard potentials of zinc
Compounds with nearly identical molar masses often have very different physcial properties. Choose the compound with the lower value. Solubility in water: di-ethylether or 1-butanol. Why is it lower?
The sample requires 48.24 mL of 0.08893 mol/L Na2S2O3 to reach the equivalence point. Assuming that the AU3+ and Li+ ions are unreactive during the titration, determine the mass percent of LiCLO in the sample.
According to the following reaction, what amount of Al2S3 remains when 20.00 g of Al2S3 and 2.00 g of H2O are reacted? A few of the molar masses are as follows: Al2S3 = 150.17 g/mol, H2O = 18.02 g/mol.
Convert the initial rate from units of abs/s to [o-NPG]/s. Use a cell path length, l=1cm and molar extinction coefficient of e=3550 M^-1 cm^-1. Remember that A=ecl where c is concentration.
the solubility of nh3 in water at an nh3 pressure of 320 mmhg is 22.8 g100 ml. what is the solubility of nh3 if the
Predict the products of each of the following reactions. Assume that a reaction occurs in each case. write a balance equation for each one. Mg(s) + Zn(No3)2(aq) -->
calculate moles of fe used from the mass of fe used and the molar mass of
a solution of 116 ml of 0.170 m koh is mixed with a solution of 230 ml of 0.240 m niso4. what precipitate
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