QUANTIFIERS a little; a few 1) We will come back in
days
2) There is
traffic here.
3) Would you like some beer? Just
please
4) There are only
biscuits left.
5) Can I have
pepper, please?
6) Would you like
water?
7) There were
taxis in front of the station
8) Put __ salt and mix the ingredients.
9) The bottle was not empty.
water was left.
10)
students can answer the questions.
11) The weather was bad, but
people came.
12)Give me
cigarettes, please
13)It's winter, but we still have
flowers in the garden.
14)She can give us help
15)I only have chips at home.
16)In days we go on holiday.
17) There is
sugar left.
погите
там 2Ме(ОН)+H2SO4=Me2SO4+2H2O
\Молярная масса серной кислоты 98, значит количество её было 1,35/98=0,0138моль
значит количество гиджроксида Ме - 0,0276
значит 0,0276 какого-то вещества весят 1,1г. значит 1 моль будет весить 1,1/0,0276 = 40г/моль
в эти 40 г/моль входят молярная масса кислорода и водорода (ОН-группы)17, и масса металла - 40-17 =23. по таблице менделеева смотрим - 23 - атомный вес Натрия. Бинго! NaOH