PLEASE HELP ME Scientific Background A student, living in Miami, picks up trash on the beach while volunteering for a service club. The student knows that any plastic items collected need to melt within a range of 100 to 150 degrees Celsius (°C) in order to be recycled at a local recycling facility.

When water dissolves sugar, which process is not involved? o dissociation o hydration o surface area of the solute increases sa

Determine the number of moles of air present in 1.35 l at 750 torr and 17.0°c. which equation should you use? n=pv/rt what is the number of moles present? ⇒ 0.056 mol a sample of n2 gas occupying 800.0 ml at 20.0°c is chilled on ice to 0.00°c. if the pressure also drops from 1.50 atm to 1.20 atm, what is the final volume of the gas? which equation should you use? v2= p1v1t2/p2t1 what is the final volume of the gas? ⇒ 932 ml these are the answers

How many energy levels contain electrons in an atom of zirconium (zr)?