Answer:
Radiation therapy is the use of high energy radiation to kill cancer cells.
8.43
58.44g/mol*1/6.93g= 8.43moles of NaCL
D.) He arranged elements by Atomic Masses
If the ending substance has changed its properties. For example if iron rusts it is a chemical change because it is no longer the same as before it is now just rust. A physical change only changes the appearance but burning something or changing it's chemical properties is a chemical change.
Percent by volume is equal to the volume of the solute over the total volume of the solution times 100%. Therefore,
30 = volume of ethanol / 100 mL x 100
volume of ethanol = 30 mL
Hope this answers the question. Have a nice day.
