1- a lot of
2.a lot of
3- many
4 a lot of
5. many
6.many
7. many
8many
How you suffer each other?
Ответ: I go shopping every day. Usually I go to the supermarket to buy some bread, sausages, milk. I pay by cash at the cash-desk, but sometimes I pay by card. The cashier always gives me a receipt. I always buy vegetables and fruits at the greengrocer's. The fruits and vegetables are fresh there.
B. 6) wonderful
7) enjoyable
8) interesting
9) fantastic
10) exciting
A. 1) sitcom
2)news
3) reality show
4) talk show
5) science fiction
Buffer solutions, depending on their composition, are divided into 2 main types:
acidic and basic.
Acid buffering systems are usually formed by a weak inorganic or
organic acid and a salt of the same acid with a strong base.
For example:
1) CH3COOH + CH3COONa - acetate buffer
weak acid salt acid
2) H2CO3 (H2O + CO2) + NaHCO3 - hydrocarbonate or
weak acid salt acid bicarbonate buffer.
Basic buffer systems are formed by weak inorganic or
organic base and a salt of this base with a strong acid. For example:
1) NH3 · H2O (NH4OH) + NH4Cl - ammonia buffer
weak base salt
2) C2H5 – NH2 + C2H5NH3Cl - ethylamine buffer
weak base salt
Basic buffer systems are formed by weak inorganic or
organic base and a salt of this base with a strong acid. For example:
1) NH3 · H2O (NH4OH) + NH4Cl - ammonia buffer
weak base salt
2) C2H5 – NH2 + C2H5NH3Cl - ethylamine buffer
weak base salt.
