A car travels 250km and stops along the way. the entire trip takes 5 hours. what is the average speed of the car
a) 25 km/h
b) 40 km/h
c) 50 km/h
d) 250 km/h

Estimate the change in the gibbs energy and molar gibbs energy of 1.0dm3 of octane when the pressure acting on it is increased from 1.0 atm to 100 atm. the mass density of octane is 0.703 g cm−3

Frequency of electromagnetic waves that a radio station is assigned is called

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=