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AS we saw in Section 12-8 ,stacking spheres always leavesopen space .Consider the corresponding situation in two dimensions:Squares can be arranged to cover the area ,but circles cannot.
In acetic acid vapor ,some molecules exists as monomersand some as dimers( see figure 12-31 ).If the density of the vaporat 350 K amd 1 atm is 3.23 g/ L what percentage of the molecules must exist a
The magnitude of impulse on the skier as he leaves the starting gate is?
If the melting pointof ice decreases by 1.0 0C for every 125atm of pressure what would be the melting point of the ice under the skates?
A conical surface of radius R is uniformly charged with surface charge density sigma. Find the potential at the tip P of the conical surface. (Hint: You do not need to know the height; bottom surfac
Are the fullerenes network covalent solids? What makes them different from diamond and graphite ? It has been shown thatcarbon can form chains in which every other carbon atom is bonded to the next
The boiling point elevation of a solution consisting of 2.10 g of anonvolatile solute in 97.9 g of benzene is0.5671 oC. What is the molecular weight of the unknown solute?
The partial pressure of water above a solution of water and anonvolatile solute at 25oC is 19.9 mm Hg. What is themole fraction of the solute?
Calculate the minimum mass,in grams, of hydrogen gas that would have to be burned toform water vapor in order to provide the necessary work to produce188.0g of ethylene.
A 1.0000g sample of an unknown mixture containingCaCl2 is mixed with 1.0000g Na2CO3(excess) to form 0.4352g of CaCO3 ppt.How many moles of Ca were in the unknown mixture?
Using AMDAHL'S law, compute speedups for a program that is 98%vectorizable for a system for a system with 16,64,256 and 1024processors .
A student determines the molar mass of acetone CH3COCH3, by themethod used in this experiment. She found that theequilibrium temperature of a mixture of ice and water was 1.0degrees C on her thermom
What is the wavelength of light in centimeters having a frequencyof 1.5x10^18 s^-1? (The speed of light is 3.00 x 10^8 m/s)
Calculate the de Broglie wavelength of an electron accelerated from rest through a potential difference of (a) 100 V, (b) 1.0 kV, (c) 100 kV.
Explain how a sodium atom might end up with the exact same electron configuration as a neon atom?Nettie's answer: By losing or gaining electrons?
A 4.0 g sample of Colorado oil shaleis burned in a bomb calorimeter, which causes the temperature ofthe calorimeter to increase by 5.0 C. The calorimetercontains 1.00 kg of water (CH2O = 4.184 J/g C
When 5.0 g of an unknown substance is dissolved in 100.0 g of water, the freezing point of the solution decreases by 1.5 degrees Celsius.
How much heat is gained by Nickel when 500g of Nickel is warmed from 22.4 deg C to 58.4 deg C? (The specific heat of Nickel is 0.444 J/(g dot Celcius)
If 12.354 g of sodium thiosulfate penthahydrate is actually used to make the titrnt solution (500 mL), what is the actual molarity of the sodium thiosulfate solution?
Diversity in plants, I AM WORKING FOR TOPIC DIVERSITY IN PLANTS> I WANT TO COMPARE STRUCTURE AND LIFE CYCLE OF BRYOPHYTA,PSILOPSIDA,LYCOPSIDA,SPHENOPSIDA,FERNS,GYMNOSPERMS AND ANGIOSPERMS BUT UNFORTUN
Three identical point charges Q, are placed at the certices of an equilateral triangle. The length of each side of the triangle is d. a) Determine the magnitude and direction of the total electrosta
The bottom end of the wire is placed at the center of the ring, while the other end extends to infinity. Wire has a linear charge density lambda. Find the net electrostatic force acting on the wire.
The return trip over the same route takes 3.0 h because of heavy traffic. What is the average speed for the return trip?
A car goes around a curve on a road that is banked at an angle of 30.0°. Even though the road is slick, the car will stay on the road without any friction between its tires and the road when its
He work done by the gravitational force on the crate? The work done by the pull on the crate from the rope?