Calculate the freezing point of a solution
Calculate the freezing point of a solution that contains 68.4 g of sucrose (table sugar) in 300. g of water. One mole of sucrose is 342 g. Kf for H2O = 1.86 oC/m.
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The ball remains in contact with the kicker's foot for 0.050 s, during which time it experiences an acceleration of 390 m/s2. The ball is launched at an angle of 54° above the ground. Determine the horizontal and vertical components of the la
A 65 gram sample of copper was heated to 128.5 degrees Celsius then placed into 150 gram of water at 19.8 degrees Celsius. Calculate the final temperature of the mixture and the heat transferred from copper to water.
Four 6.5 kg spheres are located at the corners of a square of side 0.80 m. Calculate the magnitude and direction of the total gravitational force exerted on one sphere by the other three.
The rocket attains its launch speed in a negligibly short period of time, after which its engines shut down and the rocket coasts. By how much does the rocket clear the top of the wall?
Although newly minted pennies look as though they are composed of copper, they actually contain 2.7% copper with zinc being the rest of the metal. If the densities of copper and zinc are respectively 8.72 and 7.14 g/cm3, what is the density of a n
If you interacted with Scott briefly, you might think he was normal. However, once he told you about the government's plot against him and how he was going to be rescued by some alien from another galaxy, you would start to suspect that he was
A cube of ice is taken from the freezer at -9.2 and placed in a 109 aluminum calorimeter filled with 320 of water at room temperature of 20.0 . The final situation is observed to be all water at 15.0. What is the mass of the ice cube?
How far from the point of firing does the other fragment strike if the terrain is level?
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How Social Media Is Reshaping News. Pew Research Center, 24 Sept. 2014. E-Book. Anderson a researcher for Pew Research Center, and alumni from Stanford