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To determine the approximate mass of a small sherical shot of copper the following experiment is preformed: 125 pieces of shot are added to 7.9ml of water in a graduated cylinder and the volume becomes 8.3ml. The density of copper is 8.92 g/cm^3. Assuming that all the pieces of shot are the smae size what is the mass of a signle piece of shot?
The compression ratio of today's cars is so much higher than in cars of years past. What is the major advantage of increasing the compression ratio?
The baloon rises to an altitude of 20,000 m, where atmospheric pressure is 67 mmHg and the temp is 210 K. What is the volume of the balloon at 20,000 m
Nickel has a face-centered cubic unit cell. The density of nickel is 6.84 g/cm3. Calculate a value for the atomic radius of nickel.
What is the pressure exerted by some nitrogen gas collected in a tube filled with water on a day when the room temperature is 18.0ºC
Correlation of structure with the melting point - What structural aspect of these 18-carbon fatty acids can be correlated with the melting point?
Which of the following nuclides have magic numbers of both protons and neutrons: (a) helium-4, (b) oxygen-18, (c) calcium-40, (d) zinc-66, (e) lead-208
The chemical reaction that causes aluminum to corrode in air is given by 4Al+3O2 Al2O3 in which Hrxn = %3352 kJ rxn = %u2212625.1 J/K) What is the Gibbs free energy for this reaction at 5975K ?
What mass of calcium chloride is dissolved in 100. mL of a 1.20 M solution of calcium chloride
Balance the following equation in acidic solution using the lowest possible integers and give the coefficient of water. MnO4-(aq) + H2C2O4(aq) ? Mn2+(aq) + CO2(g)
Ethanol (CH3Ch2OH) the intoxicant in alcoholic beverages, is also used to make other organic compounds. In concentrated sulfuric acid, ethanol forms diethyl ether and water.
what is the percent by mass of nahco3 in a solution containing 30 g of nahco3 dissolved in 500 ml of
What is the label for the orbital shown here that indicates the type of orbital and its orientation in space
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