Dk
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

Will give ! what are the advantages and disadvantages of nuclear power? check all that apply. one advantage of nuclear energy is that it does not produce carbon dioxide emissions. storage of nuclear waste is a short-term problem associated with nuclear energy. the problem with uranium mining is that a large quantity of uranium must be extracted to meet energy needs because the energy release from uranium fission is so low. safe operation of a nuclear power plant can be jeopardized by a human mistake.

What does the symbol (–hfus) indicate in a phase change?

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.