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Useful Constants: 1 Torr = 133.32 Pa; R = 8.3145 J/mol·K You have a thin metal sphere of unknown volume that contains helium gas at low pressure. You put the entire metal sphere into a bath of liquid nitrogen, and a pressure gauge on the sphere indicates a pressure of 301 torr.
a) You now place the metal sphere in a mixture of dry ice and methanol. What is the new pressure? torr
b) You now place the metal sphere in ice water. What is the new pressure? torr
c) You now place the metal sphere in a water bath at room temperature (measured to be 25.6 °C). What is the new pressure? torr
d) You now place the metal sphere in boiling water. What is the new pressure? torr
e) Given that the volume of the metal sphere, pressure gauge, etc., was 341 mL, how many moles of helium gas would you have? mol
The nucleus of the hydrogen atom has a radius of about 1.1x10^-15 The electron is at a distance of about 5.29 Ã- 10-11 m from the nucleus. compute the volume of the atom
Both surfaces of a double convex lens have radii of 30.8 cm. what is the index of refraction of the lens material
A helium-neon laser (? = 630 nm) is used in a single-slit experiment with a screen 7.5 m away from the slit. If the slit is 0.8 mm wide, what is the width of the central bright fringe on the screen
A Carnot engine operating with an ideal gas takes heat energy from the hot reservoir at 500 degrees C and exhausts heat energy to the cold reservoir at 250 degrees C. If the engine does 400J of work per cycle, what is its efficiency.
The cohesive energy of a sodium chloride crystal is 6eV per ion pair, Neglecting the energy of repulsion, estimate the interionic spacing
A fictional spaceship accelerates at a constant rate of 0.108 m/s^2. How long would it take to reach the moon, 3.48 x 10^8 m away
q1. if a thunder clap comes 1.4 s after the lightning strike how far away is the strike? calculating the wavelength and
For safety in climbing, a mountaineer uses a nylon rope that is 60 m long and 1.0 cm in diameter. Find its Young's modulus
A projectile is fired at v0 = 394.0 m/s at an angle of θ = 64.2o with respect to the horizontal, How far will the projectile travel in the horizontal direction, R
It is important for the body to have mechanisms to effectively cool itself; if not, moderate exercise could easily increase body temperatures to dangerous levels. by how much would his body temperature rise during this exercise
question1a 43 n toys is placed in a light swing that is attached to ropes 3.5 m long.a discover gravitational potential
A Carnot engine has 40 g of Helium gas as its working substance. Calculate the work generated by this engine during one cycle
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