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A column of mercury is contained in a cylindrical tube. Thistube has a diameter of 8.0mm, and the height of the mercury columnis 1.20m. Given that the density of mercury is13.6g/cm3 and the volume of mercury can be calculated from the formula πr2h, calculate the mass of mercury present in the cylindrical tube.
Draw a Kekule diagram for benzene - why is this representation of benzene not considered to be as good as drawing a hexagon with a circle in the centre? What does the circle represent?
What is the concentration of the HNO3 solution? (b) How many moles of NaOH were in excess after the first addition?
What combustion products are produced when materials made from polyacrylonitrile smolder and burn?
A voltaic cell utilizes the following reaction: 2Fe3+ + H2 --> 2Fe2+ + 2H+ what is the emf of this cell under standard conditions? what is the emf for this cell
Naturally occurring thallium has two isotopes, thallium-203 (202.9723442 amu) and thallium-205 (204.9744275 amu). The atomic mass of thallium is 204.38 amu. What is the percent of thallium-205
What is the pH of a buffer solution prepared from 5.15g of NH4NO3 and 0.10L of 0.15M NH3? What is the new pH if the solution is diluted with pure water to a volume of 500mL
Determine how many liters 8.93 g of carbon dioxide gas would occupy at 150°C and 1.00 atm
A sample of krypton gas at a pressure of 0.621 atm and a temperature of 20.7oC, occupies a volume of 17.2 liters. If the gas is compressed at constant temperature to a volume of 5.62 liters, the pressure of the gas sample will be
a compound has a molar mass of 100 gmol and the percent composition ofnbsp 65.45 c 5.5 o. determine the empirical
Calculate the freezing point of a solution of 500.0 g of ethylene glycol (C2H6O2) dissolved in 500.0 g of water. Kf = 1.86 degrees C/m and Kb
It decomposes into its elements. Write the balanced equation for this reaction. If 71.8 g of Hgo is decomposed, calculate the volume of oxygen at STP
The final, dried product weighed 0.1314 g. What is the percent weight of Zn (65.39 g/mol) in the original sample
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