Which body system is this? Your brain and nerves receive and send electrical messages to control your voluntary and involuntary actions.

The rock in a lead ore deposit contains 89 % pbs by mass. how many kilograms of the rock must be processed to obtain 1.5 kg of pb?

An alcohol thermometer makes use of alcohol's changing in order to measure temperature. as the temperature goes up, the alcohol contained in the thermometer increases in volume, filling more of the thermometer's tube.

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution