Cho 360 gam glucozơ lên men thành ancol etylic (giả sử chỉ có phản ứng tạo thành ancol etylic). Cho tất cả khí CO2 hấp thụ vào dung dịch NaOH thì thu được
106 gam Na2CO3 và 168 gam NaHCO3. Hiệu suất của phản ứng lên men ancol là:

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

What is the main purpose of patent attorneys? defend the company against legal claims manage financial investments invent new products protect rights to new products and processes

What state of matter is ice a. liquid b. element c. solid d. gas