Se tienen 145 g de etanol (C2H5OH) a -273°C, sabiendo que la temperatura de fusión del mismo es de -117°C, su Hfus = 5.02 KJ/mol (calor latente de fusión), su temperatura de vaporización es 78°C y su Hvapor = 39.3 KJ/mol, determinar cuanta energía requiere para llegar a una temperatura de 100°C. (Cetanol = 112 J/mol K)

Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.

Acar travels 40m in 8 seconds find the car speed

Which of the following statements comparing electron microscopy and light microscopy is false? which of the following statements comparing electron microscopy and light microscopy is false? both the electron microscope and the light microscope use the same wavelengths for illumination. images produced by light microscopes can be in color, whereas electron microscope images are black and white unless they are artificially colored. the electron microscope has greater resolution than the light microscope. electron microscopes can allow examination of viruses and internal cell structures, whereas light microscopes are limited to objects that are 0.5 micrometers and larger. request answer