PLEASE HELP! ASAP!
1.) Which of these does NOT describe a form of electromagnetic radiation?
A. radio
B. visible
C. nuclear
D. infrared

2.) A is NOT a good reflector.
A. star
B. moon
C. comet
D. planet

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

Which bonds are found inside a water molecule

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.