Which phrase describes a scientific law? O A. A claim about the pull between objects that cannot be verified
through experimentation
B. A statement that can be used to predict the motions of two
objects only under special conditions
C. An equation that can be used to accurately calculate the pull of
gravity between two objects
D. An explanation of why the force of gravity exists between two
objects

Calculate the work done by an external agent during an isothermal compression of 1.00 mol of oxygen from a volume of 22.4 l at 10∘c and 1.0 atm pressure to 16.8l

Ahair dryer is basically a duct in which a few layers of electric resistors are placed. a small fan pulls the air in and forces it through the resistors where it is heated. air enters a 1200 w hair dryer at 100 kpa and 22°c and leaves at 47°c. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.

Why is a noble gas different from other elements