A 0.00215 g sample of polystyrene, a polymer composed of carbon and hydrogen, produce 0.00726 g CO2 and 0.00148 g H20 in a combustion analysis. (BT3: Apply)
a. How many moles of carbon are in the mass of CO2 produced?

Which system revise and send electrical signals throughout the body

Last week i was assigned a thematic. we have groups of three but the people i was assigned with haven't been in school for days. i would appreciate if anyone can me with my thematic . i highlighted most of the important steps and i circled my thematic topic. in desperate need : ( its due on february 19

Ricardo notices that when he plays soccer in the rain, his ball does not seem to go as far after a kick. what is the best scientific question that ricardo could ask about this observation? is soccer better played in the rain or sun? how does rain affect the distance a soccer ball can travel? how does rain affect the speed of a soccer ball? is soccer affected by the rain?