Đốt cháy hoàn toàn x mol este e chỉ chứa este cần dùng 3,5 x mol O2 thu được a mol CO2 và b mol H2O với a trừ b = x công thức phân tử của X là

What problem would a person have if the nucleic acid in one of his or her cells were damaged?

The pressure inside a hydrogen-filled container was 2.10 atm at 21 ? c. what would the pressure be if the container was heated to 92 ? c ?

What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers