What is the molar mass of alcl3? a. 62.43 g/mol b. 116.39 g/mol c. 124.86 g/mol d. 133.33 g/mol e. 187.29 g/mol

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?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

Apotter's wheel moves uniformly from rest to an angular speed of 0.20 rev/s in 32.0 s. (a) find its angular acceleration in radians per second per second. rad/s2 (b) would doubling the angular acceleration during the given period have doubled final angular speed?