All of the following are features associated with active plate margins except:
a. volcanic arc.
b. black smoker.
c. continental rise.
d. rift valley.
e. trench.

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

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

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?