1. Are the apples nice?
2. Can he take the apples?
3. Do they like the apples?
4. Does the like the apples?
5. Have they got ten apples?
1) in 2)in 3)of 5)in 4)of 6)then
Скоро Новый Год! Моя семья и я иду к бабушке, но сначала мы должны подготовить подарки и украсить квартиру! Моя мама и я скоро пойдем в <span>магазин, чтобы купить подарки для всей семьи! И с моим отцом, мы будем украшать квартиру! Но, конечно, готовиться к новому году будет мама! Маме, я хочу, подарить новые туфли, и папе новые штаны. Дед Мороз, я попрошу новый макияж и новые ....( такого слова нет, ты видимо не дописал(а) )
Рассказ ведется от лица девочки</span>
Moscow
Russia
2nd December 2018
Dear Ben,
Tnaks a lot for your letter. Sorry that I haven't answered earlier but I was really busy with my school. I'm glad youre OK.
The most popular hobbies with Russian teenagers are playing video games and watching films. I would like to try myself at making soap. I think, it will be very interesting and useful. Honestly speaking, I have not too much free time now because of exams but when I have it I usually read books and take photos.
Acually, I'd better go now: my mom asked me to help her with our dinner. Take care and keep in touch.
Best wishes,
Sasha.
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.
