đâu đúng đâu ta 

V co_{2< đktc>}= 3.7185 : 22.4 ~ 0.166 (l)

A/ CO₂ + Ca(OH)2 ➜ CaCO3 + H2O

B/vì dung dịch nc vôi trog dư => chỉ xảy ra 1 pt tạo kết tủa

CO₂ + Ca(OH)2 ➜ CaCO3 + H2O

0,166   0,166           0,166       0,166    (mol)

m CaCO3= nCaCO3 * M CaCO3= 0.166 * 100= 16,6

complete the following dialogues with the words and phrases below: long weekend, brochures, high season, travel agent's, tourists, break, abroad

1. Have you decided where you 're going on holiday this year?

> No, no yet. I might call in at the ... on the way home and pick up a few...

2. I'm really fed up with work at the moment. I need a....

>why don't you take next Friday off and have a .... in Paris or Amsterdam?

3. Are you going to Wales again this year?

> Not likely! I'm going somewhere... where I can be sure of some sun.

4. I fancy a few days in Venice this summer.

> In August? Right in the middle of the...! You must be crazy. The place'll be absolutely full of ....