9/10 cloudy

today, i kinda dunno wat happened, cause they lab report that i had prepared during this weekend isnt correct at all. Not that it was wrong, but the teachers are sibeh dulan, they wanna another expression from the one that i had written, cause i make some calculations in between, n it can actually help me to simplify the calculation a little bit, but the teachers want the all complete expression of the concentration, really dulan. I spent about 1 hr to think where did i make a mistake n to change to another expression, n another 1 hr to correct the whole thing. Haiz, really dunno wth is that idea, y i need to follow them instructions like that? As long as i got the correct method n correct calculation, then all should be fine alrdy.