Определить изменение скорости химической реакции, если концентрация реагирующих веществ в системе изменится 3 раза: 1) CH3COOC2H5+NaOH=CH3COONa+C2H5OH 2) 4HCl+O2=2H2O+2Cl2 3) Ca+2H2O=Ca(OH)2+H2
1. Complete the text. Write a, an or the. ( ) There’s an art gallery near my school. I sometimes go to (1) art gallery when I’ve got homework for art class. There’s (2) café there. I usually buy (3) drink. (4) café is really nice, and it isn’t (5) expensive place!
There’s an art gallery near my school. I sometimes go to (1) art gallery when I’ve got homework for art class. There’s (2) café there. I usually buy (3) drink. (4) café is really nice, and it isn’t (5) expensive place!