Viết các phương trình phản ứng xảy ra giữa các chất: HCOOH, CH3COOCH=CH2, CH3COOC6H5 với lần lượt các dung dịch sau: NaOH (dư), AgNO3/NH3 (dư), Br2/H2O. 2. Hoàn thành sơ đồ chuyển hoá sau:
A (C6H8O4) + NaOH X + Y + Z
X + H2SO4 E + Na2SO4
Y + H2SO4 F + Na2SO4
F R + H2O
Cho biết E, Z đều cho phản ứng tráng gương, R là axit có công thức C3H4O2

african americans demonstrated their newly found freedom by relocating often in search of relatives whom they had been separated from during slavery. others established schools to educate freed people and they built institutions such as churches and political organizations to advocate for their rights.

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

you need to have a picture of the atom that way we can answer it