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a. The distance from Earth to the Moon is about 240 000 miles. The Concorde has a relative speed of about 2400 km / h. If the Concorde could fly to the moon. How many hours take it, no count the gravity?
b. Ethanol fills a cylindrical glass tube 15.0inches long. We find that the mass of ethanol needed to fill the tube is 9.4g. Calculate the internal pipe diameter in inches. (The density of ethanol is 0.789 g / ml)
How much silver iodide, AgI, in grams will dissolve in 1200 ml of pure H2O at 25 degrees Celcius when the system reaches equilibrium
A 13 mL sample of a solution of Pb(ClO3)2 was diluted with water to 17 mL. A 15 mL sample of the dilute solution was found to contain 0.027 moles of Pb2+. What was the concentration of Pb(ClO3)2 in the original undiluted solution?
determine what concentration of oh - is needed to dissolve 0.015 mol ofnbspznoh2 zinc hydroxide in a liter of solution
A solution is prepared by dissolving 228 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
The original amounts for the reagents with 0.5g of starting material (4-cyclohexene...) was 5mL water, 0.2g decolorizing carbon. 1.5mL of 1M sodium borohydride, 0.5mL of 5%chloroplatinic acid, and 2mL concentrated HCl.
Which of the following is NOT true about the thermodynamic standard state?
The rate constant, k, for a given reaction was determined at a number of temperatures. A graph of log k versus the reciprocal of the Kelvin temperature yielded a straight line with a slope of -250 K. What is the activation energy of this reaction ..
when aluminum is heated in oxygen aluminum oxide is formed. what weight of the oxide can be obtained from 25.0g of the
An element has three naturally occurring isotopes, calculate the percent abundance and the atomic mass
A general statement concerning the solubility of organic compounds is: The smaller molecules dissolve best in a solvent with a low molecular weight.
Define three carbon atoms bear the unpaired electron, The pentadienyl radical, CH2=CH-CH=CH-CH2, has its unpaired electrons delocalized over three carbon atoms
Identify each of the following as saturated, monounsaturated, polyunsaturated, omega-3, or omega-6 fatty acids.
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