OMG PLEASE HELP IM DOING SO WELL IN SCIENCE AND THIS IS GRADED AND MY PROFEESER WONT HELP

If 15 drops of ethanol from a medical dropper weight 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? the density of ethanol is 0.80g/ml

Athe top of a hill, an athlete on a skateboard has x joules of mechanical energy. how much mechanical energy will she have at the bottom of the hill? ignore the effects of friction.

What is the name of the enzyme that forms at the start of transcription?