baseball1525
08.12.2021 •
Chemistry
CH2 – COOH D. NH2 – C3H6 – COOH
Cho 0,04 mol một aminoaxit X chứa 1 nhóm –COOH và 1 nhóm –NH2 tác dụng với một lượng vừa đủ dung dịch NaOH thu được dung dịch A. Cho dung dịch A tác dụng với một lượng dư dung dịch HCl thu được dung dịch B. Cô cạn cẩn thận dung dịch B thu được 6,8 gam muối. Các phản ứng xảy ra hoàn toàn. Công thức cấu tạo của X là
A. H2N–CH2 –COOH. B. H2N–CH2 –CH2 –COOH. C. H2N–CH2–CH2–CH2–COOH. D. H2NCH(CH3)COOH.
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Ответ:
It releases energy from the breaking of bonds during its combulsion stages.
Explanation:
(This expanation is not from me, its from qizzlet.com. but the anserw is made by me)
When propane burns, heat and light are produced. Where does this energy come from? The energy comes from, the breaking of the bonds and it is being released.
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