cheungwaito

酯化作用esterification

I will keep my eyes open for it 點解？

點用COSTS，COSTING，同COSTED

化學問題, 多多指教

有關chem mixing solution問題

我想問下我做律師要有咩條件呢

求一本好的中六中七的 english grammar 書

3條英文問題

Write Prepositions

中文轉英文!

點解d人要發明時光機?

男人要如何有效地控制自己的性慾?

持續服食避孕丸會否引致不育?

usage

why do men keep on putting their hands in their boxers?

I just wanna know your idea about jerk off?Is it good or not?

would u plz tell a good & intresting subject for my lecture?

will i get reproductive problems if i keep on wetting my balls after masturbation?

what is the best age of doing sex?

Masturbation is bad for health?

In your opinion, what are some serious environmental problems in the city? How do they affect our daily life?

Which particular element is required for blood clothing?

Is it true that children's blood group is more similar 2 their mother's blood group?

How does aerobic respiration work?

Can you get electricity from plants?

What is the largest muscle in the body?

how do i emprove my iq?

We know and can explain "HOW" stuff works but can anyone answer "WHY"?

Can humans be born with the absence of an umbilical cord? Do not take into account cloning.?

What are the causes of red-green color blindness?

What came first? The chicken or the egg?

what causes sickle cells?

how does Bacteria get oxygen?

cause of leg cramp?