Liquid oxygen, which has a boiling point of 90 k and a latent heat of vaporization of 214 kj/kg, is stored in a spherical container whose outer surface is of 500-mm diameter and at a temperature of −10°c. the container is housed in a laboratory whose air and walls are at 25°c. (a) if the surface emissivity is 0.20 and the heat transfer coefficient associated with free convection at the outer surface of the container is 10 w/m2 ⋅ k, what is the rate, in kg/s, at which oxygen vapor must be vented from the system? (b) moisture in the ambient air will

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

it breaks and dirupture other materials and other sencews from the bottom

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27