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The perimeter, area and volume of a tetrahedron (the solid whose faces are 4 equilateral triangles) are respectively: P = 6a; A = 31/2 a2; and V = 21/2 a3 / 12, where a is the length of an edge. An edge of the tetrahedron is measured to be x cm where x is the last two digits (replace zeros by 1) of your student ID and the uncertainty in the measurement is 1 cm, What is the percent uncertainty in the length of an edge? What are the absolute and percent uncertainties in the perimeter, area and volume of the tetrahedron?
A large number of polycyclic benzenoid aromatic hydrocarbons are known. One of these, benz/a/pyrene, is a powerful carcinogen found in tobacco smoke. Draw the structure of this hydrocarbon. Can you suggest other sources where this material might b..
How many milliliters of 0.150M sulfuric acid are required to react with 8.20g of sodium bicarbonate.
Determine how many significant figures are there in the Fahrenheit result when 7.02C converted to Fahrenheit scale,?
Draw the structure (on a scratch sheet of paper) for the molecule that fits the following description and then name it according to IUPAC formalism:
A 325 mL sample of gas is initially at a pressure of 721 torr and a temperature of 32°C. If this gas is compressed to a volume of 286 mL and the pressure increases to 901 torr, what will be the new temperature of the gas (reported to three signifi..
The density of liquid oxygen at its boiling point is 1.14kg/L , and its heat of vaporization is 213kJ/kg. How much energy in joules would be absorbed by 4.0 L of liquid oxygen as it vaporized.
Sodium Carbonate (NaCO3) is available in very pure form and can be used to standardize acid solutions. What is the molarity of the HCl solution if 25.3 mL of the solution is required to react with 0.256 g of Na2Co3
A mixture of twenty five grams of potassium nitrate(KNO3) and two grams of CuSO4*5H20 with 11.5 grams of water at 100 degree celcius temperature, 15 g ramsof water are mixed.
Calculate the mass of silver chloride required to plate 225 mg of pure silver.
Determine the equilibrium concentrations - what are the new equilibrium concentrations of all species.
A star is estimated to have a mass of 1 1036 kg. Assuming it to be a sphere of average radius 7.0 105 km, calculate the average density of the star in units of grams per cubic centimeter.
How many moles of oxygen are needed for the complete combustion of 9.88* 10^21 molecules of hexane?
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