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bài 3. tiến hành sản xuất ancol etylic từ xenlulozơ với hiệu suất của toàn bộ quá trình là 70%. để sản xuất 2 tấn
ancol etylic, khối lượng xenlulozơ cần dùng là

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?