John roller skates 48 km in 3 hours. What is his average speed in kilometers per hour?
A. 16 miles per hour.
B. 1.6 km/hr.
C. 16.5 km/hr west.
D. 16 km/hr.
Hu like I need it rn❤️

A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.

Which statement would indicate the presence of an acid