Hey there!
When work is done on an object, the amount of energy it has changes.
Hope this helps!
~Autumly
True.
SF are used for simplifying figures in a measurement to produce a more accurate reading.
(g solute/g solution)*100 = % mass/mass
30 g / 400 * 100
0,075 * 100
= 7,5% w/w
hope this helps!